How can the ejection seat be adjusted for the pilot?

The correct answer indicates that the ejection seat can be adjusted electrically up and down. This feature is designed to accommodate pilots of various heights and ensure that they are positioned correctly for optimal visibility and control during flight. The electric adjustment allows for precise positioning, which is crucial for safety and effectiveness, especially in the event of an ejection.

The option of manual adjustments forward and rearward is not correct because the design and operation of the T-6B ejection seat focuses on vertical positioning rather than horizontal adjustments. Similarly, manual adjustments upward and downward would not provide the same level of reliability and precision as electric controls, which are necessary to ensure that the seat is adjusted quickly and accurately. The option to electrically adjust forward and rearward is also not applicable, as this function is not part of the ejection seat’s capabilities. Therefore, the emphasis on electrical adjustment in the vertical plane is integral to the ejection seat's functionality.