Runoff pollution occurs when
a.
hot water is released into waterways
b.
toxic chemicals are dumped into lakes and rivers
c.
water carries pesticides and fertilizers into lakes and rivers
d.
drinking water sources are contaminated by acid rain

The correct answer is C. Water carries pesticides and fertilizers into lakes and rivers

Explanation:

Runoff pollution mainly occurs when water from rain or other sources is not immediately absorbed by the soil, but instead moves over the surface absorbing pollutants such as pesticides or fertilizers that are common nowadays. Finally, the water ends in lakes, rivers or oceans, therefore, the water in them is polluted by the substances and chemicals previously absorbed by the water running off. According to this, it can bee concluded runoff pollution occurs when "water carries pesticides and fertilizers into lakes and rivers".