'Finally' is the answer the others don't make sense if you try to read them with the rest of the sentence.
Answer:
D
Explanation:
because it's a very strong country
Answer:
We need more, is this a book?
Explanation:
Answer:
He wanted to know what kind of men were on it.
Explanation:
Since he was somewhere foreign to him he thinks that they are people, well the men, that were different from him.