Knowledge of Language

In 1912, Austrian physicist Victor Hess ascended in a balloon to measure radiation levels at high altitudes, expecting them to decrease. Instead, he discovered that ionizing radiation actually increased with altitude. Hess proved that radiation did not emanate from the Earth itself, which was a hypothesis that had been proposed by earlier scientists, but instead, it came from outer space.

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

In 1912, German meteorologist Alfred Wegener proposed the theory of continental drift, but his ideas were initially rejected because he could not explain the mechanism by which the continents actually moved and traveled across the globe. Which of the following choices best replaces the underlined portion of the sentence to make it concise and grammatically correct?

The botanist explained that the rare orchid blooms annually once every year, which is a fascinating event to witness.

Which choice most effectively eliminates redundancy in the underlined portion of the sentence?

During the construction of the Brooklyn Bridge, workers faced the threat of caisson disease, commonly known as the bends. At that time, doctors currently did not understand that rapidly changing air pressure caused nitrogen bubbles to form in the bloodstream.

Which of the following choices best eliminates the redundancy in the underlined portion of the sentence?

Although she had never painted before, Elena decided to try her hand at watercoloring. She bought a variety of brushes, several tubes of paint, and a pad of textured paper. She then proceeded to paint a picture of a landscape scene that depicted the mountains.

Which choice is the most concise and grammatically correct replacement for the underlined portion?

In 132 CE, the Chinese polymath Zhang Heng presented the imperial court with a vessel designed to register earthquakes from afar. Due to the fact of the device's interior mechanism, which utilized a central pendulum that was suspended and hanging inside, it could detect the direction of a distant tremor. This invention allowed officials to dispatch aid to affected provinces immediately, long before messengers could arrive on foot.

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

In 1945, self-taught engineer Percy Spencer was working on active radar sets at the Raytheon corporation. While standing near an operating magnetron, he noticed that a chocolate bar in his pocket had begun to melt. Due to the fact that he was curious and interested in finding out why this happened, Spencer decided to test other foods, including popcorn kernels, which quickly became the world's first microwaved popcorn.

Which choice is the most concise and grammatically correct option for the underlined segment?

The standard model of particle physics has long been regarded to be the most robust framework for describing the fundamental forces of nature. Which of the following choices best replaces the underlined portion of the sentence?

To create the illusion of depth in his portraits, Leonardo da Vinci employed the *sfumato* technique. This was a method that blends tones and colors together so gradually that they merge imperceptibly without any perceptible lines.

Which option is the most concise and grammatically correct replacement for the underlined portion of the passage?

In 1948, graduate student Bernard Silver overheard a grocery store executive asking for a system that could automatically record product information at checkout. Silver shared this request with his friend Norman Joseph Woodland. Woodland, who was completely fascinated and also deeply intrigued by the request, subsequently decided that he would move to Florida in order to focus on developing a solution.

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

Although the treaty was signed in secret, the details were soon leaked to the press. This public disclosure, which made the confidential information known to the general populace, sparked widespread protests across the nation.

Which choice most effectively replaces the underlined portion of the sentence to eliminate unnecessary redundancy while maintaining grammatical correctness?

The local business owners were required to comply to the new safety regulations.

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

The baker feeds the sourdough starter flour and water on a daily basis every day, this routine keeps the wild yeast active.

Which choice most effectively eliminates redundancy from the underlined portion while maintaining correct sentence structure?

Although the digital archive was designed to be permanent, the fragile physical nature of magnetic tape means that data must be migrated to new media on a regular basis at recurring intervals in order to ensure its long-term preservation.

Which choice most effectively and concisely completes the sentence?

Although the team had initially planned to examine multiple variables, the lead researcher decided to focus at the effects of temperature on the enzyme's stability. Which of the following is the most appropriate choice to replace the underlined portion?

In the summer of 1967, postgraduate student Jocelyn Bell Burnell was analyzing data from a newly constructed radio telescope. She noticed a faint, repeating signal in the charts that pulsed with astonishing regularity. Due to the fact that the signals recurred at such highly periodic intervals of time, some astronomers initially wondered if they had detected a transmission from an extraterrestrial civilization.

Which option is the most effective choice for the underlined portion of the sentence?

In 1928, Scottish biologist Alexander Fleming returned to his laboratory and noticed that a mold had contaminated one of his petri dishes. This mold was a substance that possessed the ability to destroy the surrounding bacteria, leading to the discovery of penicillin.

Which of the following is the most effective replacement for the underlined portion of the sentence?

In 1948, Bernard Silver and Norman Joseph Woodland set out to design a system that could automatically read product information at checkout. Their initial design, which was inspired by Morse code, used a series of [underlined_start]concentric circular rings that formed circles, but this[underlined_end] pattern was prone to smudging during printing.

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

Dendrochronologists analyze the annual growth rings of ancient trees to reconstruct past climate patterns. Because these records provide a chronological history of the environment that is arranged in order of time, they allow researchers to map centuries of precipitation levels.

Which choice most effectively and concisely writes the underlined portion of the sentence?

In his latest research paper, the marine biologist explained that the migration patterns of humpback whales are similar with those of blue whales, suggesting a shared evolutionary history. Which of the following is the best replacement for the underlined portion?