Arjun, a psychologist, conducts an experiment to study the side effects of a drug. In this experiment, as Arjun wants to ensure accurate assessment of the drug's effects, the participants and the experimenter who interacts with the participants are unaware of the nature of the drug that is being administered. Arjun is conducting a .

double-blind procedure.

Explanation:

Double-blind procedure -

It refers to the method of experiment , where the experimenters as well as the participants do not have any information about the experiment , is referred to as a double - blind procedure .

The method is adapted to eliminate any discrimination , which would make the experiment to yield very accurate results .

Hence , from the given scenario of the question ,

The correct answer is double-blind procedure .

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