Group expected to have a positive result, allowing the researcher to show that the experimental setup was capable of producing results.

• A. Experiment
• B. Positive Control
• C. Hypothesis
• D. Negative Control

Answer: (B)

A positive control confirms that the experimental setup can produce a positive result. By including a group or condition where a known positive outcome is expected, you demonstrate that the assay, reagents, and methods are functioning correctly. If the positive control yields the expected result, you can trust that a lack of effect in the experimental group is due to the treatment itself rather than a flaw in the procedure. In contrast, a negative control is meant to show no effect to rule out background influences, a hypothesis is a statement being tested, and an experiment refers to the overall procedure rather than a specific validating group.