I think it is a noun phrase, and not appositive.
Answer:
I would say the specific and focused thesis statement is number 1, the wolfs diet consists of eating a number of things, including elk, deer, moose and bison.
Explanation:
I would say this because it's describing what the wolf eats with specific nouns and it's focused on the wolf's diet.
Answer: instituted an embargo of Cuba, forbidding Americans to trade with the country
Explanation:
