Answer: Force Calypso to let him go.
Reasoning: The send Hermes to Calypso and tells her to let him go and threatens to destroy her Island.
A. arrest because apprehend means to arrest someone who's done crime.
Based on the question given this is the answer:
He thinks she is worried but optimistic about her husband's
health.
In the central theme of the story, it is given a fact that
the belief of superstitions is something to be afraid of, although people have
taken a wise decision to trust on medicinal treatments.