What is the purpose of identifying key points in a piece of writing?

a. this will the reader write a similar paper about the same topic and idea.
b. this will teach the reader how to do the things described in the document.
c. this will encourage the reader to create a list of interesting facts learned from reading.
d. this will the reader organize the information and find the central idea.

i think it might be letter d. but i want to check my answer through some .

irving effectively uses emotional responses to create suspense in the story.irving’s tone creates expectations for the reader, which in turn create suspense.irving’s suspense would have been more effective with more vivid details.irving’s story is not suspenseful

i go to the store and buy some cheese,suddenly there was akward silence.   out of no where comes a ninja, and he takes an apple, and chokes the cashier, until he passes out.   the disapeared in a puff of smoke.   the cashier went to the doctor, and everything was fine again.   they all lived happily ever after without anymore ninjas.

the end

go to buy cheese= exposition

akaward silence= rising action

ninja chokes the cashier= climax

cashier goes to the doctor= falling action

they live happily ever after= resolution