Under donor rules, the donor must be at least how old?

• A. Sixteen years old
• B. Eighteen years old
• C. Twenty-one years old
• D. Twenty-five years old

Answer: (B)

The needed concept is that a donor must have legal capacity to consent. Being at least 18 years old means the person is an adult who can understand the donation’s risks and benefits and make an independent, informed decision without needing a parent or guardian’s permission. That’s why 18 is the standard minimum. Some programs may allow exceptions for minors with guardian consent, but the commonly tested rule is 18. The other ages listed don’t reflect the typical threshold for legal consent to donate.