The author states that the water in a reservoir may contain harmful microbes. Which detail from the text best supports this?
A Animals may not be able to survive the changes to their habitat when rivers are dammed.
B Sunlight contains UV light that is invisible to people and can cause sunburns.
C The Environmental Protection Agency requires that drinking water be tested for contaminants.
D Groundwater happens when rain or other precipitation soaks deep into the soil.
The correct answer is C: The Environmental Protection Agency requires that drinking water be tested for contaminants.
Explanation: This detail directly supports the idea that the water in a reservoir may contain harmful microbes because it highlights the necessity of testing drinking water for contaminants, which includes harmful microorganisms. It indicates awareness of potential health risks associated with water sources.