A. Have been investigating
Pretty sure that's it.
Answer:
its answer is B.
Explanation:
B is the <em>correct</em> answer because it correctly sums up the main points of the passage.
A is <em>incorrect</em> as it implies that to the point opposite to that of the paragraph.
C is <em>incorrect</em> because it says what happens to Americans up to the Russians which is not true.
D is <em>incorrect </em> as it implies that nobody knows which is opposite to that of the paragraph.
Leteral or dictionary meanings of a word
It was hard to accept the fact that I should start over. That is the correct one.