Which of the following is a common sign of incompetence to consent to treatment?

• A. Adequate understanding of the condition.
• B. Ability to articulate a preference clearly.
• C. Reasoning about treatment options.
• D. Inability to communicate a choice.

Answer: (D)

Decision-making capacity for treatment rests on being able to understand information, appreciate its significance for your own situation, reason about options, and communicate a choice. If a patient cannot communicate a choice, there’s no reliable way to know their preferences, so consent cannot be considered valid. That makes inability to communicate a choice the strongest sign of incompetence to consent. The other signs—understanding the condition, clearly articulating a preference, and weighing options—show the person can make and express a decision, supporting valid consent.