Question

select the correct answer.
read the passage, and then answer the question.
a team of scientists studied the sediment at the bottom of an ancient lake. they were able to determine the weather conditions of the indus valley in ancient times. they found that the certain area had suffered a drought after the monsoons declined. the drought lasted 200 years. because of the drought, there wasnt enough food or water. the people of the indus valley were forced to leave their cities.
what theory about the cause of the decline of the indus civilization does the passage support?
○ a. climate change
○ b. invasion by an outside force
○ c. rivers changing course
○ d. spread of introduced diseases

Explanation:

The passage mentions a drought (a climate - related event) that lasted 200 years. Due to the drought (a form of climate change), there was not enough food or water, and the people had to leave their cities. Options B (invasion by an outside force), C (rivers changing course), and D (spread of introduced diseases) are not mentioned in the passage.

Answer:

A. climate change