If a researcher varies the loudness of music in a factory to observe its effect on the rate of productivity of the employees,what is the dependent variable

A)  loudness of music
B)  rate of productivity 
C)  factory setting
D)  the employees

Dependent Variable

A variable in scientific research that is affected by other variables, measured to test the effect of the independent variable.

Loudness of Music

The perceived volume of music, which can vary based on the sound's intensity and the listener's sensitivity.

Rate of Productivity

The measure of output or efficiency of production within a specified period of time.