Which of the following is an approved portable electronic device under 10,000 ft?

Hearing aids are classified as approved portable electronic devices for use on commercial flights below 10,000 feet, as they are essential medical equipment designed to assist individuals with hearing impairments. The Federal Aviation Administration (FAA) recognizes that these devices do not cause interference with the aircraft's systems, thus permitting their use during all phases of flight, including takeoff and landing.

In contrast, other choices such as televisions, radios, and remote-controlled games are not generally permitted for use during flight under 10,000 feet, as they could potentially produce electromagnetic interference that might affect flight operations or passenger safety. Understanding the specific regulations concerning each type of device is crucial for compliance with FAA guidelines during flights.