How did the war powers resolution of 1973 affect the power of the us president?

It allowed the president the ability to directly place troops in Vietnam without the approval of congress for 30 days,

I think 4 is the right choice.

Explanation:

Options:

It required the president’s approval for US forces to remain in a foreign war for longer than sixty days.It required the president to inform Congress within forty-eight hours of the details of any troop commitment.It limited the president’s ability to raise taxes to fund both a war effort and social programs.It gave the president the unlimited right to commit US forces to action as he or she saw fit.

The answer is crop yield.