Writing about something with the purpose of proving or disproving, clarifying, reviewing, or judging its merits is writing intended to "inform" since it seeks the truth. Of course "inform" and "persuade" go hand-in-hand quite frequently.
Answer:
A.
Explanation:
A is correct.
B is incorrect. To make it correct, you would have to replace the comma with a semicolon.
C is incorrect. To make it correct, you would replace the first period with a comma.
I believe it’s sometimes because it describes an adjective
