Question

A change from talking to singing best illustrates a change in____

A.time
B.place
C.speaker
D.action

Answer 1

A change in action. You're doing an action when you sing and talk and that is what is changing.

Answer 2

Salutations!

A change from talking to singing best illustrates a change in _________.

A change from talking to singing best illustrates a change in action. An instant change in what we are doing is called action. An action means an act, or a thing done. Talking to singing is clearly shown a change in the action.

Thus, your answer is option D.

Hope I helped :D