What is the main purpose of an informative essay?

to entertain the reader with amusing details
to tell a story for a general audience
to create a character who is vivid and interesting
to explain the relation of parts to a whole

Purpose is to inform. Here the most appropriate option looks "To explain the relation of parts to a whole"

D. to explain the relation of parts to a whole

Explanation:

i took the test

answer: the gettysburg address is a speech delivered by abraham lincoln at the november 19, 1863, dedication of soldier’s national cemetery, a cemetery for union soldiers killed at the battle of gettysburg during the american civil war.

explanation:

the statement that best summarizes the passage is c. the careful organization of these fairs shows the intelligence of the people who planned them.