Why did the egyptians spend years and many resources to build enormous tombs for their dead pharaohs?

The Egyptians spent many years and many resources building enormous tombs for their dead pharaohs because they thought that these leaders were spiritual beings, who were there by divine influence, and therefore needed to be respected and lavished with the highest form of wealth and extravagance. 

they protect them in many ways.

most build a museums

give the museums money to support and finace and advertise there relgion.

cultivate talents such as cultural relics management and cultural relic protection and restoration.

your answer would be (a)