Which of the following best describes experimental material?

A) a variable that is not accounted for by the experimental design
B) the set of objects studied in an experiment
C) a randomly assigned condition that serves as the independent variable of an experiment
D) clothing worn by an experimenter that has not yet been approved by the FDA

Experimental Material

The group or class of objects or subjects that is being studied in an experiment.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effects on the dependent variable.

FDA

The Food and Drug Administration, a federal agency of the United States responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter pharmaceutical drugs, vaccines, biopharmaceuticals, medical devices, and veterinary products.