Which of the following best describes an effect of the policy established in the passage?

a. the executive branch's power to wage war independently of congress greatly increased.
b. congress repealed key provisions of the war powers act to show support for the vietnam war.
c. protesting against u.s military action abroad became a crime in the united states.
d. the united nations condemned american military involvement in vietnam.

The correct answer is answer A ("The executive branch's power to wage war independently of Congress greatly increased").

According to the passage, Vietnam had violated United Nations' International Laws on several attacks towards the United States. In general terms, Congress has to approve military action before the president can send troops to fight. In that sense, the executive branch is dependant on Congress power to manage the military. Here, however, the president is explicitly given all support from Congress, which greatly increases the executive's power to wage war.

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