Which group in a trial receives no active drug and serves as a control for comparison?

• A. Placebo recipients
• B. Researchers
• C. Sponsors
• D. Vendors

Answer: (A)

The main idea is having a baseline to compare the active treatment against. That baseline is provided by a control group that does not receive the experimental drug. When a placebo is used, participants get an inert substance that looks like the real medication but has no therapeutic effect. This setup lets researchers see whether improvements are truly due to the drug or to placebo effects, expectations, or other biases. Randomization and blinding help keep the comparison fair so differences in outcomes can be attributed to the treatment itself. The other roles mentioned—researchers, sponsors, and vendors—are about who runs, funds, or supplies the trial, not about receiving no active drug.