I ain't sure of what the question is exactly but I assume it has to go like this
"Have you left Hawaii before writting this letter?"
Answer:
Jackson relies on polite, academic words, whereas Rutledge relies on rich description
Explanation:
The complete predicate in this sentence is A. mopped his brow, exhaled sharply, and picked up his phone.
B and C aren't correct, because they aren't complete predicates - something is missing.
D isn't correct, because <em>looking up from his computer monitor </em>is not a predicate, it is an adverb phrase.