The answer is A. "the plans of march made by great generals in time of war." The plans they made wasn't as complicated like generals of war, it is an exaggeration.
The answer is C. At first the child misjudges the elderly neighbor when he fears her, and is happy with their new friendship when she helps him.
A has misjudgment but no happiness.
B doesn't match at all
D doesn't say that the rivals misjudged their rivalry or were happy at any point.
Answer: Alliteration
Explanation: I don't really know if your asking which example of figurative language is the text you just wrote.