The two themes that Hemingway develops in the old man and the sea are there is honor in the struggle against defeat. Thus, the correct option is C.
In literature, a theme may be defined as the central assertion or underlying connotation a writer analyzes in a novel, short story, or other literary work.
According to Hemingway, a man can be destroyed but not defeated till he fights for what he wants. And at this period of struggle against defeat, a man receives honor for that.
Thus, the correct option is C.
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