Answer:
b)
Step-by-step explanation:
b) To serve as grand graves for pharaohsThe primary purpose of the Egyptian pyramids, particularly the famous ones like the Pyramids of Giza, was to serve as tombs for pharaohs and important individuals in ancient Egyptian society. These pyramids were constructed as elaborate and durable structures to house the bodies of the deceased pharaohs and provide them with a safe and monumental burial place, along with various offerings and items for the afterlife. While the pyramids had other symbolic and religious significance, their main function was as monumental tombs, not for storing grain, housing common people, or protecting against invaders.