Standard English Conventions

Under the extreme pressure of the deep ocean, certain species of glass sponges construct highly stable skeletal lattices _______ structures made of interlocking silica spicules that can withstand immense physical forces without collapsing.

Which choice completes the text so that it conforms to the conventions of Standard English?

In the late nineteenth century, a prominent coalition of independent labor unions and social reform groups in Chicago campaigned tirelessly for improved working conditions in manufacturing plants. Despite facing significant opposition from influential industrial leaders and local politicians, ______ eventually succeeded in securing the passage of the landmark eight-hour workday law of 1893.

Which choice completes the text so that it conforms to the conventions of Standard English?

To determine the chemical composition of remote astronomical bodies, astrophysicists analyze the light filtering through their surrounding atmospheres. By studying how a ________ unique chemical signature absorbs specific wavelengths of stellar radiation, researchers can identify the presence of greenhouse gases like methane and carbon dioxide, offering clues about the potential habitability of distant worlds.

Which choice completes the text so that it conforms to the conventions of Standard English?

In his study of the dwarf planet Ceres, planetary scientist Dr. Hiroshi Sato argues that the bright sodium carbonate deposits in Occator Crater are not merely static geological features. Instead, Sato suggests that these salt deposits serve as critical clues for researchers, functioning as indicators of cryovolcanic activity, remnants of a subsurface ocean, and ________

Which choice completes the text so that it conforms to the conventions of Standard English?

The passage below discusses desert survival adaptations. Which word completes the passage so that it conforms to the conventions of Standard English?

For decades, researchers in cognitive neuroscience have investigated mirror neurons, which are specialized brain cells that fire both when an action is performed and when it is observed. Many scientists hypothesize that this neural mirroring is essential for empathy ______ argue that its primary function is simply to facilitate motor learning and imitation.

Which choice completes the text so that it conforms to the conventions of Standard English?

Read the passage below. Which punctuation mark should be placed in the blank to correctly set off the nonessential element?

Based on the rules of Standard English conventions, what punctuation mark should be inserted into both blanks to correctly separate the items in the complex list?

The passage below discusses prehistoric cave paintings in western Europe. Which word or phrase completes the passage so that it conforms to the conventions of Standard English?

In a study of forest ecosystems, ecologist Dr. Suzanne Simard observed that Douglas fir trees utilize underground mycorrhizal networks to interact with one another. According to Simard, these fungal networks allow the trees not only to share essential carbon with neighboring seedlings but also ________ during periods of drought.

Which choice completes the text so that it conforms to the conventions of Standard English?

In the late nineteenth century, chemists struggled to isolate elemental fluorine due to its extreme reactivity, which presented unprecedented laboratory challenges. Attempts to extract the element repeatedly ended in failure ______ the highly reactive gas immediately bonded with any surrounding materials, including the glass apparatus used to contain it, often causing dangerous explosions.

Which choice completes the text so that it conforms to the conventions of Standard English?

A recent investigation into the subglacial lakes of Antarctica revealed that a unique community of extremophilic bacteria thrives in complete darkness, obtaining ______ energy from chemical compounds dissolved in the water.

Which choice completes the text so that it conforms to the conventions of Standard English?

Deep within Earth's lower mantle, temperatures and pressures are high enough to synthesize unique crystalline structures. The mineral bridgmanite ______ remains unstable and rapidly decomposes when brought to the surface. Consequently, geophysicists must study this abundant substance indirectly by simulating the extreme conditions of the deep Earth in high-pressure laboratory chambers.

Which choice completes the text so that it conforms to the conventions of Standard English?

Although marine biologists have long studied the ecological dynamics of giant kelp forests, they continue to be amazed by the plants' rapid growth under optimal conditions. A single kelp frond can grow up to two feet per day in ideal ______ this rapid expansion provides vital shelter and nutrition for hundreds of diverse marine species.

Which choice completes the text so that it conforms to the conventions of Standard English?

In temperate forests, mycorrhizal networks formed by underground fungi connect the root systems of multiple distinct plants, facilitating the shared distribution of essential carbon and nitrogen. Research by ecologist Pamela Cabrera suggests that these subterranean pathways do not merely benefit isolated specimens; rather, they can significantly enhance the neighboring _______ survival rates during prolonged periods of severe environmental stress.

Which choice completes the text so that it conforms to the conventions of Standard English?

Though many astronomers hypothesized that the unusual orbits of trans-Neptunian objects were caused by a massive, undiscovered world known as Planet Nine, a 2021 orbital simulation proposed a different explanation _______ the collective gravitational influence of a vast, dispersed disc of icy debris left over from the solar system's formation.

Which choice completes the text so that it conforms to the conventions of Standard English?

Read the passage below. In the blank, enter the single punctuation mark that correctly completes the sentence by setting off the nonessential element.

During the excavation of the ancient Roman villa at Oplontis, a dedicated team of field archaeologists uncovered a complex network of frescoed corridors. In the report, the researchers noted that each of the mural panels, despite showing significant water damage from centuries of subterranean exposure, had retained much of _______ original pigment.

Which choice completes the text so that it conforms to the conventions of Standard English?

In conservation biology, the Allee effect describes a phenomenon where a population's density drops below a critical threshold, reducing the reproductive success of individual organisms. Although species with high density easily find mates, underpopulated groups often struggle to locate breeding partners _______ this isolation can lead to a rapid, self-reinforcing decline toward local extinction.

Which choice completes the text so that it conforms to the conventions of Standard English?

In 1995, astronomers discovered the first exoplanet orbiting a sun-like star, known as 51 Pegasi b. This landmark discovery fundamentally altered our understanding of planetary ______ proved that giant gas planets could exist in extremely close proximity to their parent stars. Prior to this finding, scientists assumed that large planets only formed in the cold, outer regions of solar systems.

Which choice completes the text so that it conforms to the conventions of Standard English?