Classification separates something into component parts and examines them. true or false?

The answer is true:

Classification is a concept linked to the verb classify, which refers to the action of organizing or placing something according to a specific directive. The term is also used to name the link that is established between those classified after a test.

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).

c. to understand which information will best persuade your readers. (apex) correct answer.