Answer:
Because it had not rained for several months, there was a ...shortage................... of water.
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. :)
I think the answer is an outline.
It's certainly sensory. And it's figurative too. I think I'd pick figurative because the central piece of language is a simile. That's pretty good use of language when you compare the bobbing heads of flowers to helmeted soldiers.