A. him; objective
The sentence should read: The librarian found the book for him and me.
This is because you want to look at the type of verb and how it relates to the pronoun. The librarian, the subject, found what? the book. for who? Him. You want to make sure the pronouns agree also, and since 'me' is objective, the other pronoun has to be too.
The right choice would be D. Premier : Country :: Teacher : school.
Other options doesn't match at all. They are off point, especially A and B.
B) Gleefully.
Jubilantly is a positive emotion, extreme happiness and excitement. Gleefully is also an accurate description of that. Thus, gleefully is the best answer.
Hope this helps!
The correct answer would be American colonists, British people, and sovereign nations.