What two ideas do modern writers seek to juxtapose

The is will be right depending on your class, but Making the Character(s) Relatable, and making a rough scene Emotional. I often try to do this for my psychology class.

what do u want me to answer?

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).