Question

Marcus is planning a research paper about keeping motor oil out of the water supply. Which research question is the most focused to help guide his research?

A.
How are individuals and industrial agencies supposed to dispose of motor oil?
B.
What are the greatest water pollutants or toxins that are included in motor oil?
C.
What effect does motor oil in the water supply have on soil and crops?
D.
How can a person recognize the presence of motor oil in the water supply?

Answer 1

C.

What effect does motor oil in the water supply have on soil and crops?