You can tell by taking two fingers and placing them on the side of ur neck or touching ur wrist or your heart those are just a few ways
False, you gotta have consent to administrator CPR. also the area has to be safe, and it depends on the situation.
It isn't literal. It's a war quote meaning if you put in good and hard effort, it can save your life. In my oppinion, that can relate to more situations and circumstances in life though.
Are there option choices?