Okay, so this is a little hard to answer when you do not have the excerpts, but I will try my best to work a answer out of the headings. I think your answer would be C. It makes sense, the info that comes after the titles, so If I were you I would go with C.
I hope that helps.
The answer is D because as you can see the word “For example” it will give some information which means has more details that you need to know
The answer is D. Infancy and old age.
I hope this helps. :)
I is a pronoun, like is a verb, getting is also a verb/participle, long is an adjective, letters is a noun.