He thinks that they will help because C. They are all clergymen.
Answer:
these emotions happen when you're depressed and sad.
The underlined verb is becoming because when you look at the is becoming you see that it is in present tense and active voice. The is carries the present tense and the becoming carries the progressive aspect.
The infinitive phrase 'to keep the children from accidentally falling in the pool' is used as C, an adverb, because its meaning is - for the reason to keep them from falling, and if the meaning is 'reason', it must be an adverbial phrase.