The correct answer is B. Geometry.
Step-by-step explanation
Egypt was one of the most popular ancient civilizations, it developed great advances in agriculture, architecture, writing, mathematics, astronomy, among others.
In architecture, Egyptian were prominent due to tehir majestic works, especially the pyramids, that were used as tombs for the pharaohs and they remain until today. Additionally, these structures are a compelling reason to believe in the great advances in the field of the geometry of the Egyptians as it has been determined Egyptians used precise measures and geometrical concepts to create pyramids. So, the correct answer is B. Geometry.