Which of the following people is making a decision based on opportunity cost? a. ralph does not fix his broken fence because he wants to spend his money on a new tv. b. donald tries to drive less often because the price of gas has become more expensive. c. leonard places his money in a savings account so that he will be able to use it in the future. d. michael decides to buy two cinnamon rolls because he will receive the third roll for free.

answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.