In a Field Experiment, Researchers

Multiple Choice

In a field experiment, researchers

A) manipulate an independent variable in a natural setting using existing groups of people as the experimental and control groups.
B) take advantage of events outside their control that, in effect, manipulate an independent variable.
C) observe people's responses to a treatment and select a control group after the treatment data have been collected.
D) study people's responses to manipulated independent variables in a natural settings while exposing participants to conditions of the independent variable in a reasonably random fashion.