The simple subject of this sentence is Matt Robins.
this is going to help
the answer is not D not C so i think its B. She’s only pretending to need a ride.
The phrase from the excerpt that suggests that Krogstad is prone to engage in crime and may, in fact, be a criminal is the following one:
diseased moral character
It is the only option that talks about somebody being a bad person, which is what Krogstad is. The other options do not show that moral ambiguity this option does.
An author who wanted to increase the complexity of a character might make that character more ambiguous. A person who is ambiguous is a person with a bad behaviour and it makes them act differently throughout the story. For example, a boy who is moral but fusses because he doesn't get the toy he wants, this is considered as an ambiguous character. Therefore, the answer is ambiguous.