What speaker are you talking about?
Answer:
Don't worry, I can take care of myself.
Answer:
The point at which a situation abruptly, and perhaps drastically, worsens. Mom already seemed annoyed, but the fat really hit the fire when she found out that you'd been lying to her. See also: fat, fire, hit.
Yes - the tense of a verb is tacked onto the end.
Answer:
A. Nature reveals spiritual truths to us when we pay close attention to it
