In the text this passage was provided for, you should have been able to locate the fallowing passage: "the theory that the lithosphere is broken into pieces that float on the asthenosphere."
Answer: Lithoshpere
There would be 17 students chose to participate in the painting class.
The answer is B because A eventually becomes blocked, C has no way of getting wind because of A and, B is at a higher point and does not become blocked! hope I helped :):):):):)