Students in a science class learn that groundwater is an important source of drinking water for many communities. They construct a model
to study how leaking chemicals from a landfill can affect groundwater.
What is the most effective way for the students to see how leaking
chemicals from a landfill can enter a well?
Select one:

A: Pump water out of the well to see how stained water from the tissue paper
moves toward the well.

B: Drop food color into the well at the well's opening.

C: Tear some of the colored tissue paper and put the paper pieces into the well at
the well's opening

D: Tilt the tank towards the well and drain some of the water out of the tank.