Hello. You did not present the title of the text to which this question refers, which makes it impossible for it to be answered exactly. In the meantime I will help you in the best possible way.
A war is an environment of death, decay, problems, sadness and destruction. For Nat to compare her own situation to a war, she must be involved in these terrible factors. Nat's situation, therefore, must be a situation of misery and destruction, where she cannot find rest and happiness, but has the feeling that everything is falling apart around her and where she feels no security at all.
Assuming that in the last option 'whichever melody you create' is underlined, the correct answer is that one, the last sentence. Because this is the only sentence in which 'to' is used as a preposition, in 2 and 3 there are no prepositions, and in 1 'to' is a part of an infinitive phrase.
Answer:
veterinarians are the only doctors educated to protect the health of both animals and people. They work hard to help animals that are hurt and take them into their care so that they get better quicker. I hope this helps you!
