Which of the Following Was the Purpose of the Gulf

Which of the following was the purpose of the Gulf of Tonkin Resolution?

A) To authorize the president to take any action necessary to prevent further aggression in Vietnam
B) To declare that "we are not going to send American boys ...to do what Asian boys ought to do for themselves"
C) To outline the Johnson administration's plans for bombing Hanoi with a nuclear weapon
D) To give congressional approval for using the herbicide Agent Orange in the jungles of Vietnam