In regard to privileges and limitations, what can a private pilot do?

The statement that a private pilot can act as a pilot in command is correct because it aligns with the privileges granted to private pilots under aviation regulations. A private pilot certificate allows the individual to operate aircraft in various capacities, including acting as pilot in command of an aircraft that they are rated to fly. This encompasses flying for personal reasons or providing flight services to others without compensation.

In contrast, private pilots cannot be compensated for flying except to share operating expenses with others on the flight, which is a specific limitation on their privileges. They are also required to hold a valid medical certificate to ensure they meet the necessary health standards to operate an aircraft. Additionally, while private pilots can receive instrument training, it typically needs to be under the supervision of a certified flight instructor, which also differs from the unrestricted nature implied in the alternative choice. Thus, the privilege to act as a pilot in command stands as a fundamental right of a private pilot.