You didn't list options, but i think maybe you meant those options:
a. The look she gave her was as frigid as a winter wind.
b. He answered the questionnaire like a monkey with a typewriter
c. The old man who walked into the room, looked as tough as old boots
d. The words her friend spoke to her were as sweet as honey.
i think the best answer is b;) it is no mere comparison, but a trasfer of meaning from how the monkey behaved (carelessly) to the person filling in the questionaire
The pronoun in the sentence is 'they'.
This pronoun repleaces the words 'dogs and cats'.
