What was the Tet Offensive?

Question

a. A combined North Vietnamese and Chinese attack on the American navy in the Gulf of Tonkin
b. An all-out invasion of North Vietnam by South Vietnamese and American troops
c. An American bombing campaign against Communist forces in Laos and Cambodia
d. A series of surprise attacks launched by North Vietnamese forces against every major city in South Vietnam
D?

Answer 1

D is right.

Answer 2

Thanks

Answer 3

D-a series of surprise attacks launched by North Vietnamese forces against every major city in South Vietnam