Informed consent requires a patient to understand risks, benefits, alternatives, and consequences.

• A. A patient’s signature on a form regardless of understanding
• B. A physician’s decision without patient input
• C. A patient’s voluntary agreement after understanding risks, benefits, alternatives, and consequences
• D. A patient’s voluntary agreement to follow treatment if the physician approves

Answer: (C)

Informed consent rests on the patient’s autonomy to make a voluntary, informed choice. The essential idea is that a patient agrees to treatment only after understanding what could happen—the risks, the potential benefits, the available alternatives (including doing nothing), and the possible consequences of each option. That is why the best statement describes a patient’s voluntary agreement after understanding these elements.

Signing a form without understanding doesn’t meet informed consent, because understanding is required, not just documentation. A physician deciding without patient input removes the patient’s agency. Agreeing to follow treatment only if the physician approves introduces coercion and conditionality, not genuine, informed consent.