The answer would be:
C- The tone would be less urgent as the enemy moves more slowly.
I know this because I took the quiz. :)
Answer: a. practice frequently & carefully prepare
Explanation: because he doesn't know the material so that's why he should practice and for him to prepare quickly and it does not say anything about him being scared.
I would say when he goes back to check on her to realize she has hung herself? You didn't post any options... So that is the best thing I have got.