Clinical Medical Assistant Certification Exam Practice Question

Correct Answer: D

Rationale: Informed consent requires the ability to understand and appreciate the implications of medical decisions. An emancipated minor, as a legally recognized independent individual, can provide their own informed consent, as they possess the necessary maturity and understanding.

Option A, a patient under the influence of drugs, may have impaired judgment and thus lacks the capacity for informed consent. Option B, a patient in foster care, does not automatically have the legal authority to consent, as guardianship issues may apply. Option C, an unconscious patient, is unable to communicate or understand their medical situation, making consent impossible. Option E, a patient with a mental disability, may have varying capacities for understanding, often necessitating a guardian for consent.