Why did swift publish his ideas in satirical format?
a. he wanted his readers to see their own errors in logic and morality
b. he wanted to entertain his readers but not challenge their social ideas
c. he hoped to make this genre of writing popular
d. he wanted to share secrets about his life without hurting those he loved

The answer is A: He wanted his readers to see their own errors in logic and morality.

Jonathan Swift, arguably the greatest of all satirists, is very well-known for employing this form of literature that employs irony and humor, blended in a poignant social critique, to state a social issue of a problematic and unjust nature in order to signal its inhumane deficiencies and point towards a change of perspective that could foster social justice and care for those who are being wronged.  

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).