Question

Select all that apply.

A pause signaled by punctuation is used to: _____.
change the meaning of a sentence
call attention to what one is saying
give emphasis to a word or idea
signal that the audience may interrupt

Answer 1

I think answer A
change the meaning of a sentence

Answer 2

The answer is the second and third choices.  To call attention to what one is saying, and to give emphasis to a word or idea.