In an Experiment,researchers Exposed Half of the Participants to Loud

Multiple Choice

In an experiment,researchers exposed half of the participants to loud noise during a memory-encoding task.The room was quiet for the other half of the participants.Later,all participants were given a memory test and the number of correct items recalled was obtained for each participant.The participants who encoded information in the quiet room constitute the:

A) independent variable.
B) dependent variable.
C) experimental group.
D) control group.