Which of the following can be classified as an environmental flight hazard?

All of the provided options can indeed be classified as environmental flight hazards due to the various ways they can negatively impact flight safety.

Bird strikes are a well-known environmental hazard, especially during takeoff and landing phases. When aircraft encounter birds, the potential for damage to the aircraft and risk to the safety of the flight is significant, particularly with larger birds that can cause serious structural damage or affect engine performance.

Solar glare can create challenging visibility conditions, particularly during certain times of day when the sun is low on the horizon. This glare can obscure the pilot's vision of critical instruments and outside conditions, which can lead to mistakes in navigation or responding to other flight hazards.

Lasers are increasingly recognized as a threat to aviation safety. When aimed at aircraft, lasers can distract pilots or even temporarily blind them, compromising their ability to control the aircraft, especially during critical phases of flight such as landing or taking off.

Each of these hazards presents unique challenges that require pilots to be aware of and prepared for when flying, reinforcing the importance of assessing environmental conditions as part of flight safety protocols. Hence, all of the options represent valid environmental flight hazards.