What reasons might a person have had to avoid using us military forces for n vietnam

We can use both social and economic reasons to avoid the vietnam war

Social reasons:

- It's not our business.  

The conflict between the northern and southern Vietnam was a civil war  that involved two different ideologies that fought for dominance in their home country. It's not our place to intervene.

- Our involvement in Vietnam war resulted in many deaths. Including both Vietnam's citizens and our own.

Economic reasons:

- The war took up a lot of government budget to the point where it drove our economy into a recession.

the answer is title i subtitle b

c. troops marched forward in close formation against newer, more accurate weapons