Depending on what you're using the word for- you can say a drug is a medication, or you can say it's an illegal substance
I want to say A. or C.
They seem the most realistic..
The correct answer for this question is Designed experiment.
A person experiences the placebo effect when their physical or mental health seems to get better after receiving a placebo or "dummy" treatment. A treatment that seems to be real but is intended to have no therapeutic benefit is referred to as a placebo. The Latin word for placebo means "I will please."
One of the most popular hypotheses holds that a person's expectations are what causes the placebo effect. It's possible that the body's chemistry can produce results comparable to what a drug might have produced if a person anticipates a pill to do something.
To know more about Placebo effect, click here:
brainly.com/question/10913418
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Physical symptoms may be:
<em>* low energy
</em><em>* loss of sleep
</em><em>* headaches
</em><em>* nausea
</em>
=)
