Which of the following describes an important action to take when experiencing signs of spatial disorientation?

Focusing on instruments is crucial when experiencing spatial disorientation because it allows the pilot to rely on objective information rather than subjective feelings or perceptions, which can be misleading in such situations. Spatial disorientation occurs when a pilot's sense of position, motion, and altitude is distorted, often due to conflicting sensory signals. By concentrating on reliable flight instruments—such as altimeters, attitude indicators, and artificial horizons—pilots can maintain situational awareness and execute maneuvers based on actual circumstances rather than their distorted sensory perceptions. This practice is vital for maintaining control of the aircraft and ensuring a safe flight path, especially in conditions where visual references may be compromised.

Other options may not provide the necessary clarity or safety in a disorienting situation. For example, increasing altitude or descending might seem logical, but without a clear understanding of the aircraft's orientation and performance, such maneuvers could potentially worsen the situation. Trusting instincts can lead to dangerous decisions based on incorrect perceptions, and attempting to return visual cues without instrument guidance may exacerbate disorientation. Therefore, focusing on instruments stands out as the best practice in maintaining control and safety.