Answer:
The answer is B disguising troops as civilians.
Explanation:
Make sure you read the question really carefully because there are two questions that are very similar...
This question asks about Viet Cong during the Vietnam War, and the other
asks about the US, which that answer is spreading agent orange.
I hope this helps out any confusing with the two questions :))
They provide a channel in which people can communicate directly to their congressmen/ back them to pass legislation on your behalf.
Answer
They include letters, diaries, journals, newspapers, photographs, and other immediate accounts. The interpretation and evaluation of these sources becomes the basis for researchExplanation: