I believe the answer is D. fats and oils.
It depends on the y or x chromosomes
Answer:
Building aqueducts to transport water
Explanation:
They developed many new techniques for buildings and construction of all types including the invention of concrete, Roman roads, the invention of Roman arches, and incredibly <u>well built aqueducts that ran for miles before they reached the end and delivered fresh water</u>.
Impatient prospective payment system