What does provoking someone mean

to anger, enrage, exasperate, or vex. to stir up, arouse, or call forth (feelings, desires, or activity): The mishap provoked a hearty laugh. to incite or stimulate (a person, animal, etc.) to action.

Explanation:

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).