Question

When responding to an emergency, you should: Act without thinking Follow appropriate procedures Do whatever you can Do nothing to help

Answer 1

When responding to an emergency, you should follow the appropriate procedures.

Answer 2

The answer is "Follow appropriate procedures". 

"Act without thinking" and "Do nothing to help" should be wrong for obvious reasons. "Do whatever you can" probably seems like a reasonable choice, but if you do whatever you can without following appropriate procedures, then you might end up making the situation worse than it already is. You could get in someone else's way, or do something that someone isn't expecting which could waste time or cause harm.