Which technique involves repeating the essence of an earlier research study with differentparticipants and in different circumstances?

a) replication
b) random sampling
c) naturalistic observation
d) the double-blind procedure

A) replication

Explanation:

Replication is defined as the term meaning repeating of a research.

Generally the repetition is done with change in the situations and the change in the subjects.

Repetition is done to observe whether the the results that has been obtained from the study with the original situations can be applied to situations where there can be change in participants and conditions.

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your friend,

i believe your answer is mountains.