Fantasy is a genre of fiction that does not depict the real world.
I'd say that it's personification. That'd be the main choice, but since it says two options, it would also be an idiom.
The correct answer is - Sara suddenly became very ill; therefore, she went to see her doctor.
A semicolon is used to separate two sentences, two separate but also connected thoughts. It should come naturally as a pause within a sentence, which is why the first three options are incorrect as they break up the sentence in grammatically incorrect locations.
The theme in a story is it’s underlying text
