Com_ is the correct answer it mean together
2.) Idiom
3.) The author’s use of language indicates the person is cheerful.
Think of the idiom “on cloud nine”, which is similar to this one, both meaning a person is delighted
One species(the parasite) benefits while the other species (the host) is harmed
Answer:
I'm pretty sure its Indirect Characterization.
Explanation:
Its describing the character with her actions and feelings rather than narrating how she is.