Question

Each of Thomas Edison's most well-known inventions---the phonograph, the practical light bulb, and the telephone transmitter---were major innovations, paving the way for many of the technologies used in the modern age.

• A. Each of Thomas Edison's most well-known inventions---the phonograph, the practical light bulb, and the telephone transmitter---were major innovations,
• B. The phonograph, the practical light bulb, and the telephone transmitter---each of them Thomas Edison's well-known inventions---were major innovations,
• C. Thomas Edison's most well-known inventions---the phonograph, the practical light bulb, and the telephone transmitter---were major innovations,
• D. Major innovations--- the phonograph, the practical light bulb, and the telephone transmitter each a well-known invention of Thomas Edison, was

Answer 1

The correct option is C Thomas Edison's most well-known inventions---the phonograph, the practical light bulb, and the telephone transmitter---were major innovations,

Correct Answer: C

The subject and verb of the main clause in this sentence must agree. Answers (A) "each...were" and (D) "innovations...was" can be eliminated for containing Agreement errors. Answers (D) can be eliminated, as it contain rudimentary sentence errors: the phrase "major innovations" is not grammatically connected to the "each..." . Answer (B) employs a different Agreement error; "each" is singular, so the phrase inside the hyphens is wrong: "each...inventions'. Only answer (C) keeps the original intent of the sentence in a grammatical way.