3. The Tet Offensive benefited the Vietcong by:
O
a. Inflicting military defeat in the US.
b. Causing many Americans to question whether or not the U. S. could win.
O
c. Forcing the US to negotiate.
O
d. Greatly increasing the amount of territory it controlled.

b. Causing many Americans to question whether or not the U.S. could win.

Explanation:

While the Tet Offensive is a major strategical & military victory, it led to the US public outrage that they were lied to by the media and the government that the North was almost soundly beaten. This event led to large amounts of protests and even riot to bring American troops back home in what they believed to be a "unwinable war". Eventually, the US government listened to the people's demand, and withdrew support from South Vietnam, which led to their eventual downfall.

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