Which event most contributed to the changing troop levels shown in this graph?

The Twenty-Sixth Amendment lowered the draft age to 18 from 21.

U.S. and North Vietnamese ships exchanged fire in the Gulf of Tonkin.

Congress expanded presidential powers to wage war under the War Powers Act.

Communist troops launched a series of attacks during the Tet Offensive.

Question

Which event most contributed to the changing troop levels shown in this graph? 

 The Twenty-Sixth Amendment lowered the draft age to 18 from 21. 

 U.S. and North Vietnamese ships exchanged fire in the Gulf of Tonkin. 

 Congress expanded presidential powers to wage war under the War Powers Act. 

 Communist troops launched a series of attacks during the Tet Offensive.

anonymous · Answer

attachment

anonymous · Answer

Help please!!

anonymous · Answer

its the 3rd on im pretty sure

anonymous · Answer

Congress expanded presidential powers to wage war under the War Powers Act-is not correct. I can tell you that for sure.

anonymous · Answer

..so the correct answer is?
not A

anonymous · Answer

its definitely not the third one i got this wrong....