What should a pilot primarily rely on when flying in low visibility?

In low visibility conditions, a pilot should primarily rely on flight instruments. This reliance is crucial because visual landmarks may be obscured or entirely invisible, making it unsafe to navigate using outside references. Weather reports provide essential information, but they do not assist during actual flight in poor visibility. Flight instruments, on the other hand, are designed to provide accurate and immediate data about the aircraft's attitude, altitude, airspeed, and navigation, allowing the pilot to maintain control and orientation despite limited visual cues. In situations where external visibility is compromised, instruments become the primary means of safely operating the aircraft, facilitating adherence to flight paths and ensuring altitude and speed are monitored correctly. Therefore, the utilization of flight instruments is vital for successful navigation and safety in low visibility conditions.