How did the building of pyramids lead to advances in science and mathematics in Ancient Egypt

How would i answer this for an exam?

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Why is terracing used in southeast asian agriculture?