Knowledge of Language

In 1941, Swiss engineer George de Mestral went for a walk in the woods with his dog. Upon returning, he noticed that burdock seeds had clung to his clothes and his dog's fur. Under a microscope, he saw that the seeds were covered in tiny hooks that attached to the small loops in the fabric. This discovery led to the invention of Velcro, which is a fastening system that is composed of two components: a hook side and a loop side.

Which of the following choices best replaces the underlined portion of the sentence?

In laboratory settings, biologists have observed New Caledonian crows fashioning hooks from twigs, this tool-making ability, which represents a capacity to create tools, allows them to extract grubs from deep tree cavities.

Which choice most clearly and concisely replaces the underlined portion of the sentence?

In 1811, twelve-year-old Mary Anning and her brother Joseph discovered the fossilized skull of an ichthyosaur along the cliffs of Lyme Regis. At that point in time during those days, people did not yet understand the concept of extinction, so they initially assumed the skull belonged to a crocodile.

Which choice provides the most clear and concise wording for the underlined portion of the sentence?

The historical museum recently acquired a collection of rare maps, these documents, which are currently at this time on display in the main gallery.

Which choice is the most concise and grammatically correct?

In 1952, computer pioneer Grace Hopper completed the first compiler, a program that translated English-like instructions into machine code. Previously, programmers had to write code in tedious binary sequences. Hopper’s development, which was a major breakthrough in computer science, revolutionized programming by allowing software to be written in a way that was much easier and simpler for humans to read and write.

Which of the following options represents the most concise and grammatically correct version of the underlined portion?

Sea otters use rocks to crack open the shells of their prey, which is a behavior that they repeat again and again to access the food inside.

Which choice is the most effective and concise version of the underlined portion of the sentence?

To decipher Linear B, classicist Alice Kober built a massive database of paper cards, sorting them into grids to analyze the relationships between grammatical endings. By cataloging grammatical inflections, she determined that the unknown language was inflected, which meant that word endings changed depending on their grammatical function. This detailed card system of hers, which was highly structured and organized in a grid format, was what ultimately laid the groundwork for Michael Ventris to crack the script.

Which of the following alternatives to the underlined portion is the most concise and grammatically correct?

After living in the dry desert of Arizona for a decade, Maria found it difficult to get accustomed with the constant humidity of southern Florida.

Which choice is the best replacement for the underlined portion?

Though the city council had initially predicted that the new transit system would be self-sustaining, the project’s ongoing expenses currently at this time continue to exceed revenue, resulting in a deficit that lacks sufficient funds.

Which of the following choices best maintains the sentence's meaning while avoiding redundancy and grammatical errors?

Every summer, the community garden produces an abundance of fresh vegetables, which are grown locally in the immediate area for residents to enjoy.

Which choice is the most effective and concise way to write the underlined portion of the sentence?

During the construction of the Brooklyn Bridge, Chief Engineer Washington Roebling became bedridden with decompression sickness, leaving his wife, Emily Warren Roebling, to step in and assist. She was responsible for taking on the duty of serving as the primary liaison, acting as a link between her husband and the on-site engineers. Over the next fourteen years, Emily mastered civil engineering, supervised daily operations, and successfully managed the completion of the monumental project.

Which choice is the most concise and grammatically correct way to write the underlined portion of the sentence?

Although most cats are highly sensitive to changes in their environment, some breeds seem completely indifferent of their owners' presence.

Which of the following choices represents the most appropriate idiomatic phrasing to replace the underlined portion?

The lead architect was responsible of designing the new civic center, ensuring it met all environmental standards.

Which choice provides the most idiomatic phrasing for the underlined portion of the sentence?

During their observations of a distant galaxy, astronomers noticed a sudden spike in gamma-ray emissions; this temporary phenomenon, which was a short-lived event, indicated the collapse of a massive star.

Which choice most effectively and concisely completes the sentence?

Unlike his classmates who preferred to study in groups, David insisted to prepare for the final exam alone. Which choice is the most appropriate idiomatic phrasing to replace the underlined portion?

For decades, local planners struggled to preserve the architectural heritage of the old downtown area. Although the city council initially supported the commercial development project, the newly enacted zoning laws prohibit developers to build structures taller than six stories in the historic district.

Which of the following choices is the best replacement for the underlined portion of the sentence?

The following passage contains an underlined portion.

In 1936, Danish seismologist Inge Lehmann published a pioneering paper that fundamentally altered our understanding of Earth's interior. Analyzing seismic waves from a recent earthquake in New Zealand, Lehmann observed that some P-waves, which should have been blocked by a completely liquid core, were instead reflecting off a distinct boundary. She reasoned that these waves could only behave in such a manner if Earth possessed a solid inner core surrounded by a liquid outer core. Before Lehmann's groundbreaking discovery, scientists had generally held the widely accepted consensus belief that the entirety of the planet’s core was composed of nothing but a single, uniform liquid layer.

Which option represents the most concise and grammatically correct way to write the underlined portion of the sentence?

Discovered in 1977 near the Galápagos Rift, hydrothermal vents revolutionized our understanding of life on Earth. These deep-sea geysers spew mineral-rich fluids heated by underlying magma, supporting complex ecosystems independent of sunlight. Rather than relying on photosynthesis, primary producers in these ecosystems—mostly specialized bacteria—utilize chemosynthesis to convert toxic hydrogen sulfide into organic energy. To thrive in this pitch-black, high-pressure zone, organisms have evolved remarkable adaptations to deal with the absolute craziness of their surroundings. Investigating these extremophiles not only sheds light on the origins of life on our planet but also guides the search for biosignatures on icy moons like Europa.

Which choice most effectively maintains the established style and tone of the passage?

In 1964, radio astronomers Arno Penzias and Robert Wilson were troubled by a persistent, low-frequency buzz that their horn antenna at Bell Labs kept picking up. Originally believing the interference was caused by urban noise or pigeon droppings, [they spent months cleaning the equipment in an effort to make it clean and free from debris.] Only after exhausting all possibilities did they realize they had detected the cosmic microwave background radiation, the ancient echo of the Big Bang.

Which choice most clearly and concisely expresses the information in the underlined portion of the sentence?

To prepare for the long winter ahead, the busy squirrels gathered acorns and hickory nuts, storing them away for future use in the months to come.

Which of the following choices represents the most concise and grammatically correct option for the underlined portion of the sentence?