D. It needs a comma before and.
Answer:
You research to find out information on a subject.
Explanation:
The purpose of researching is to find out more about a subject. For example: If you wanted to research the soviet union for a history project you would look it up online or in books so you could find out more about the subject.
<span>The king does not want Polyneices to be buried.</span>
Answer: Problem and Solution
Explanation: to show sylvia earles solution for the problem of damage to the ocean