I believe it is A. You should cover all the elements you can find in the piece. Sorry, I am really not so sure but that seems like the best bet!
Answer: All of them
Explanation: Hope it helps
True because you need to explain what you are writing about and then dive into your research writing.
Someone planted B. their seeds here.
You cannot use A or C because you don't know whether that someone is a male or a female.
1. Swimming helps strengthens the lungs and heart
2. Swimming helps reduce stress
3. Swimming burns more calories than walking and running
4. Swimming will burn 650 calories
5. Elephants can swim up to 20 miles a day. They use their trunk as their snorkel