Question

Which of these details does NOT support the central

idea?
Central Idea: Even though one of Edison's inventions failed, he never stopped
trying out new ideas.

A) The vocal engine was a cumbersome device for the
user.

B) Edison created a version of the light bulb that
was affordable and long-lasting.

C) Sound waves are not powerful enough to make the
vocal engine useful.

D) The vocal engine had a few fatal flaws.

Answer 1

i would say a

Step-by-step explanation:

the central idea was that edison would never stop trying not how it was effective for the user