Answer:
Please help me with the homework later
The Answer is... A
I'm glad to help :)
Well metal detectors can help to save a life in the event that someone has a weapon or is armed, the dectector can sense the metal in a gurn, for example, which can sve lives because if that person meant harm on others, the gun can be detected before somethinf terrible happens. Hope this helps!
The first one could be "care".
The second could be "rest".