Informed consent is an ethical principle requiring what?

• A. Participants be told enough to choose whether to participate
• B. Researchers can dictate participation
• C. No information is necessary
• D. Only verbal consent is required

Answer: (A)

Informed consent means giving a participant enough information about what the study involves—its purpose, procedures, risks, benefits, alternatives, and how confidentiality will be handled—so they can decide freely whether to participate. It also covers the right to withdraw at any time. The key is autonomy: people must understand what they are agreeing to and make the choice without coercion.

The best choice captures this by stating that participants be told enough to choose whether to participate. That emphasizes understanding and voluntary decision-making, which are central to ethical research.

Consent isn’t about the researcher dictating participation, nor about withholding information. It also isn’t limited to verbal agreement in all cases; the form of consent (written or verbal) can vary depending on the study and context, but the essential element remains that participants are adequately informed to make their own decision.