According to my research on medical studies, I can say that based on the information provided within the question an ideal placebo is a control drug that produces the same Psychological effects as the drug being tested. This is because the point of a placebo is to see how people react to it compared to the people receiving the actual test drug, since the placebo does not actually have any effects on the person.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Answer:A: Early signs and symptoms include: changes in mental status, such as disorientation, restlessness, and mental confusion. purposeless movements. increased respiratory effort.
