Someone who is legally responsible for the person and property of a minor or an incapacitated adult.

• A. Co-fiduciary
• B. Conservator
• C. Trustee
• D. Guardian

Answer: (D)

Guardianship is the legal duty assigned by a court to care for someone who cannot manage their own affairs, typically a minor or an incapacitated adult. This role covers the person’s welfare—things like medical decisions, housing, and daily care—and, in many cases, their finances as well. When a guardian is appointed for the person and for the estate, they’re responsible for both living and financial matters, ensuring the ward’s best interests are protected.

A conservator is a related but more financial-focused role, handling the person’s property or financial affairs, and a guardian of the person concentrates on the individual’s welfare. A trustee runs assets held in a trust, which is a different structure from guardianship, unless a trust arrangement is involved. A co-fiduciary simply means sharing fiduciary duties with another, which isn’t a standalone designation for the overall guardianship of a person and property.

So, the best fit for someone legally responsible for both the person and property of a minor or incapacitated adult is the guardian, reflecting the protective authority over the individual's welfare and, where applicable, their finances.