All of the following methods can preserve the environment except (2 points) select one: a. recycling. b. reducing the use of fossil fuels. c. using energy efficient technologies. d. disposing of animal waste in ground water.

Your answer would be D.

Putting animal waste in groundwater will contaminate it. If you are familiar with the water cycle then you know that the water from the groundwater is usually drunken by people in terrible countries and other animals. Diseasing them and maybe poisoning them.