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The pioneering research of Lewis Latimer and Thomas Edison,

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The pioneering research of Lewis Latimer and Thomas Edison,

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The pioneering research of Lewis Latimer and Thomas Edison, who became known for his invention of the light bulb, accelerated the development of the first power plant, which opened in New York City in 1882.

A. of Lewis Latimer and Thomas Edison, who became known for his invention of the light bulb,

B. of Lewis Latimer and Thomas Edison, known for his invention of the light bulb,

C. of Thomas Edison, known for his invention of the light bulb, and Lewis Latimer

D. of Lewis Latimer and Thomas Edison became known for his invention of the light bulb and

E. that was conducted by Thomas Edison, who became known for his invention of the light bulb, and Lewis Latimer

OA C

Source: Manhattan Prep

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A. of Lewis Latimer and Thomas Edison, who became known for his invention of the light bulb,
- when "who" follows "Lewis Latimer and Thomas Edison", it should modify both of them. Since it continues "his invention," we must rearrange the sentence so that we're only modifying Thomas Edison.

B. of Lewis Latimer and Thomas Edison, known for his invention of the light bulb,
- same issue as in A. "known for" is modifying both men here.

C. of Thomas Edison, known for his invention of the light bulb, and Lewis Latimer
- the modifier is correctly modifying just "Edison"

D. of Lewis Latimer and Thomas Edison became known for his invention of the light bulb and
- same issue with "his" applying to both men
- the structure of the sentence is now "the research... became known for... and accelerated..." This is nonsensical. Edison was known for the lightbulb; the research accelerated development.

E. that was conducted by Thomas Edison, who became known for his invention of the light bulb, and Lewis Latimer
- unnecessarily wordy. This fixes the modifier issues of A, B, and D, but C gets the same information across more succinctly, without unnecessary tense makers such as "was conducted" and "who became known."

The answer is C.

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