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.

1.c

2.a

3.d

i think its c

independent

#1  sara was always tasked with selecting birthday presents for her friends and family because everyone admired her  impeccable taste. 

impeccable (adj): perfect, flawless

#2  they moved to the united states many years ago, but their  insular  attitudes made it difficult for them to socialize. 

insular (adj): isolated; separate

#3  the professor explained the  semantic  relationship between the two nouns used in the sentence. 

semantic (adj): related to words or the meanings of words 

happy to : )