Why do you think the Mayans built their cities in the rainforest?
Please provide an explanation.

For the water, and to avoid droughts/dry climates

Explanation:

Their ability to create a great civilization in a tropical rainforest environment was one of the many interesting things about the Maya. Ancient cultures have historically flourished in drier climates, where the foundation of civilization was the centralized control of water supplies (through irrigation and other techniques).

it would be

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.