The correct answer is A.
The statement "She was ravenous for a son-in-law" contains figurative language. The specific type of figurative language used here is hyperbole.
Hyperbole is a form of figurative laungage that uses extreme exaggeration. Here, the statement implies that she is very, very hungry for a son-in-law. This is a greatly exaggerated way of saying that she really wants a son-in-law. By using figurative language, the author makes clear how greatly she desires a son-in-law.