Why is it important to have an effective research question for an informative essay?

The purpose of an informative essay is to educate others on a certain topic. Typically, these essays will answer one of the five Ws: who, what, where, when, and why. Of course, they can also answer "how," indicating how to do something.The informative essay includes information that educates and informs readers about certain event, person or idea. It consists of introduction, body, and conclusion. Choose first the major ideas to describe. Proper structure of informative essay brings reader's attention and makes it interesting for a wide audience.

Explanation:

result of the incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier mostly by the wari empire

i think the answer is   b.