Which of the following statements about finishing another person’s sentences is TRUE? 1. It is disrespectful to finish someone else’s sentences.
2. It is fun to see if you finish the other person’s sentence correctly.
3. Finishing someone else’s sentences shows that you are in agreement with that person.

I think it's Number 3.

It is disrespectful to finish someone else’s sentences.

(I just took this quiz and this was the correct answer)

Explanation:

Finishing someone else’s sentences is just a form of interrupting, which is rude. Some people just talk more slowly than others. Letting people speak for themselves shows them respect.

when i got mine it was about a 6 or 7