I believe your answer is B :)
I think all of the above...
because I know they built aqueducts and sewers, so since 2 of they are correct, then all 3 must be.
Explanation:
science is the practical and intellectual activity encompassing the systematic studying of the behaviour and structures of the physical and natural world
Answer:
Menstruation is one part of a person's menstrual cycle which includes the shedding of the endometrium (lining of the uterus) that occurs throughout a person's reproductive life.