Gathering Good Data on Hormone Release from Water Treatment Plants

Multiple Choice

Gathering good data on hormone release from water treatment plants in a particular area would require all but one of these actions. Choose the exception.

A) preventing any unused drugs from being discarded in the study area
B) preventing large mammals, especially females, from urinating in the area
C) assuring that there is a variety of soils in the area
D) also recording data from an area where there is no water release from a water treatment plant