Answer:
C. Maxim
Step-by-step explanation:
By definition, MAXIM: A succinct formulation of a fundamental principle or general truth.
It couldn't be a metaphor or an analogy, and it wouldn't be a myth. While some might think it could be an anecdote, an anecdote is a brief account of an event, usually intended to entertain, to explain an idea, and to reveal personality through a person’s actions. Obviously this doesn't apply, so it would have to be maxim.