Question

In which instance would it be most helpful to include headings or sub headings in an essay?

Answer 1

i think its a or

d,  have a nice day

Answer 2

Answer:

An essay on a topic that calls for a long discussion.

Explanation:

Then an essay is too long, a good way to make it more enjoyable is organised in a hierarchic order. With this readers are going to found the information more useful and comfortable to read.