In order to construct the pyramids, the egyptians needed to be proficient in engineering and a.) astronomy b.) mathematics c.) chemistry d.) anatomy

B.) mathematics is your answer

Not (A), because the study of stars and space have nothing to do with building buildings (or pyramids in this case)

Not (C), for while the pyramids doubled as a "battery" that was able to absorb and reflect the lights, they didn't really have anything to do with chemistry.

Not (D), building large brick pyramids have nothing to do with the study of the human body.

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b. martin luther king jr. wrote and spoke "i have a dream"

explanation:

i know this 100 percent is correct   b. is the best one. < 3