The Parthenon made use of the most familiar features of Greek architecture: post-and-lintel construction; a sloping, or gabled roof; and a colonnade.
I think it is A. Natural Sculpture, because your question asks about a type of environment sculpture, so pretty sure it is natural from the environment. Hopefully it is right :)
The author is nervous about snorkeling
Answer:
I would fold it to were you can cut it with scissors. Cut shapes out of the toilet paper roll middle to your satisfactory. Unfold the toilet roll thingy. You have a snow flake!
Explanation: The reason I would do it this way is because I use paper, fold it up, cut shapes out of it to my satisfactory, and unfold the paper. You could do the same with the toilet paper middle of roll thing!