The fourth alternative is correct (D).
All descriptions are correct and must be followed to compile a list of references. First, check out what owner will say about it. Second, ask permission and third, if allowed, thank, as a good rule of education. Meeting these requirements you will have no copyright issues.
it is not D because im taking the test now and i got that wrong
Hello!
Answer: Yoga and Pilates.
Explanation: This paragraph states that while yoga and pilates are quite similar, they also have subtle differences. From this, you can infer that yoga and pilates will be compared in the rest of the passage.
I hope that this helps you!