The definition of a hero in literature is:
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A hero/heroine is a character who, in the face of danger, displays courage, bravery, or self-sacrifice for the greater good.
The term hero/heroine usually refers to <u>the main or principal character in a literary work</u>, also known as a <u><em>protagonist</em></u>, but the first option has the most correct details.
Option D, to take care of a little boy.
I'd say B... but idk what okay you're talking about