Why do presidential powers tend to grow during national emergencies? a) the president has veto power over congress b) the federal government needs to respond quickly c) congress cannot function during national emergencies d) congressional power is weaker than the president's

B: The Federal Government needs to respond quickly.

Congress needs to go through a long and careful process to get things done, not to mention them needing to have the majority of congress agree.

The president/executive branch of the government is made up of much less people, as well as the president himself being commander and chief of the military.

Time is very important during a national emergency, and the president can get things done quickly.

Hope this helps.

Because broadest terms allows the law flexibility depending on changing society and circumstances.