Would "and the water from leaky roofs would drip over it" be personification or onomatopoeia?

well, a personification is giving a non-living thing a human-like description, and an onomatopoeia is just a word mimicking or describing a noise or sound

Explanation:

for example, "the roof leaked like tears falling from a sad girl's face"

while an onomatopeia would be a word describing a noise, such as; honk, beep, vroom, boom, and pow

b. he wants to keep from being identified by former masters.

explanation:

gregor could have been bullying her