human
Question: A drinking water reservoir for a small town develops a blue-green algae bloom. The town hires a company to eliminate the problem. Which of the following should the company investigate first as a likely source of the problem?

Choices:
A) a pit where granite is ground up into gravel
B) a neighborhood where lawn chemicals are used
C) a junkyard where old cars are salvaged for parts
D) a grain elevator where corn and soybeans are stored
gpt
The correct answer is 1: a neighborhood where lawn chemicals are used.