What can be a risk if vegetation is not managed at airports?

Managing vegetation at airports is critical because unchecked plant growth can create conditions conducive to wildfires, especially in areas with dry climates or during hot weather. This poses a significant fire hazard not only to the surrounding environment but also to aircraft operations. For instance, tall grasses and shrubs can harbor wildlife, such as birds and rodents, which can lead to wildlife strikes or complications during takeoff and landing.

Additionally, overgrown vegetation can impede visibility on the runway and taxiways, making it more challenging for pilots and ground crews to safely operate. The presence of unmanaged vegetation can increase the risk of catastrophic fires that could put both airport personnel and aircraft in jeopardy.

The other options relate to airport operations but do not directly connect the management of vegetation to immediate safety risks or operational efficiency as the identified correct answer does.