It's not parallelism. The idea is not repeated in a slightly different way.
It's not a simile or metaphor. Compared to what? The sentence is a fragment.
That only leaves A but it's not a good answer. The sentence is incomplete.
Did you leave something out?
If you had
He who gives to himself entirely to his fellow man, gives entirely to himself.
That would be parallel.
Answer:
3. He knows that they cannot move the boulder blocking the doorway.
Explanation:
When the Cyclops attacks Odysseus and his men, Odysseus' first impulse is to attack and kill him to ensure the group's survival. However, they were inside the Cyclops' cave that closed the exit with a very heavy stone, impossible to be removed by humans. Only the Cyclops would be able to open that "door" and if Odysseus killed him, he and his crew would be trapped forever.
The answer is partial phrase
How long does this story need to be?
