Answer: 1: whom 2: who 3: who
Explanation: This is what I think. Apoligies if I got any wrong, I don't use the word 'whom' very much.
I think it’s C but you have to like give us a picture or something
Dehydrated means to have lost a large amount of water from your body.
The one that could be used to increase the pace of a story is : B. short phrases
Short phrases is very common to be used to increase the pace of the story. You commonly find it in the scene where the character involved in fast-paced action with high tension
hope this helps