The principle of concomitant variation states that _____

a. When there is a change made in the cause, there should be no resulting change in the effect.
b. Where there is the cause, there must be the effect.
c. Where there is the effect, there need not necessarily be the cause.
d. When there is a change made in the cause, there should also be a resulting change in the effect.


D
This is the definition of the principle of concomitant variation.

Psychology

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