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Expression of Ideas / Rhetorical Synthesis Difficulty: Easy

While researching a topic, a student has taken the following notes:

In 1897, African American inventor Andrew Beard invented an automatic coupler.
It improved on the existing design of train car couplers.
It made the job of connecting train cars safer.
In 1938, African American inventor Frederick Jones invented a mobile refrigeration system.
It improved on the existing design of food transport trucks.
It enabled trucks to carry perishable foods farther.

The student wants to emphasize a similarity between Beard’s invention and Jones’s invention. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Beard’s automatic coupler and Jones’s mobile refrigeration system both improved on existing designs.

In 1897, Beard invented an automatic coupler, which made the job of connecting train cars safer.

Beard’s invention made the job of connecting train cars safer, whereas Jones’s invention enabled food transport trucks to carry perishables farther.

Jones’s mobile refrigeration system, which he invented in 1938, made it possible for food transport trucks to carry perishable foods farther.

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Explanation

Choice A is the best answer. It compares Beard’s and Jones’s inventions to one another, and emphasizes what they have in common.

Choice B is incorrect. This choice doesn’t emphasize a similarity. It only mentions Beard’s invention. It doesn’t compare it to Jones’s invention. Choice C is incorrect. This choice doesn’t emphasize a similarity between the two inventions. Instead, it emphasizes a difference. Choice D is incorrect. This choice doesn’t emphasize a similarity. It only mentions Jones’s invention. It doesn’t compare it to Beard’s invention.