I would go with:
A theme is best written as statement because a theme is main thing of a story, the author could also use a statement in a story to make it seem more alive or more real.
I Hope my answer worked for you :)
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.
Answer: a triangle or a circle
Explanation: i just guessed