Which statement BEST explains the relationship among these three fact?

Where are the statements?

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).

many battles and wars (such as the one at gettysburg), are commemorated by statues or monuments, with some areas preserved as monuments and national parks. do you think this contradicts the message of "grass"? in at least 200 words, explain your thinking and cite evidence from the poem to support your opinion.