It meant that as soon as one country falls under communist control, another country would fall and so on. Vietnam at the time was split into North (communist) and South (being attacked by North) and the US didn't want communism to spread, reasoning that it might eventually come to the US if nothing was done.
D is the answer for this question as it is the most likely.
Answer: C(territorial expansion of the United States.
Explanation:
Answer:
C. Pretending to be sick
Explanation:
So passive means that it was not aggressive, so like a peaceful way of resisting work.
The most peaceful way to avoid work in this situation would be pretending to be sick to avoid work.
Hope this helps :)