daagh wrote:
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.
This is a copybook case of SV agreement. If we are clear what exactly the subject is, and the impact of the words such as each, every etc, then the answer may easily pop-up.
A. Each of Thomas Edison's most well-known inventions---the phonograph, the practical light bulb, and
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