Answer:
f. it's illogical for everyone to have educated thoughts.
The last Great Pyramid as defined by most people would be Menkaure's, completed in 2510 bce. It stands at 65 meters/213 feet high. However, if you're defining a Great Pyramid as one built by a pharaoh, then the last one was for the first Pharaoh of the 18th dynasty. This was built by Ahmose I, who died in 1525 bce.
B, since all of the other answers would make the amount of the product go down.
