Haven't read that story, but going from the title I am going to say A.
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.
Find something interesting to talk about I would talk about chickens
Alright so i read the book. The answer is B. sympathetic and generous.
Because remember in the story the childerns mother got a job and didnt come to pick them up on time. The girl felt denied and missed her mother badly. Yet Ms.Crossman was there for her to tell her its going to alright. Which proves for her to be generous and caring which leads to sympathetic.
Hope I helped.