Answer: Problem and Solution
Explanation: to show sylvia earles solution for the problem of damage to the ocean
True , whale is an animal
Jim showed how much he cared about his wife he sold the rare watch his grandfather gave him so that he could buy his wife a gift
I know the answer isn't C or D. A or B both seem likely until you see that B involves a 'comma without a conjunction,' either way you should never put a comma before 'and'; I am not sure why but I am pretty sure this only applies in a formal document. So your answer is A.