What could maximum noise limits in certain areas aim to protect?

Maximum noise limits in certain areas aim to protect the comfort of wildlife and people because high noise levels can disrupt natural habitats and diminish the overall experience for those enjoying the outdoors. Excessive noise can lead to stress for wildlife, potentially altering their behavior, breeding patterns, and feeding habits. For people, particularly those seeking tranquility in nature, noise pollution can detract from the enjoyment of the environment and lead to disturbances in recreational activities. By imposing limits on noise, both wildlife and human experiences can be preserved, making outdoor spaces more enjoyable and sustainable for everyone.

The other options do not directly relate to the primary purpose of noise limits. Maintaining the visibility of trails generally pertains to safety and navigation rather than sound. The speed of snowmobiles is more about performance and regulation of the vehicles, while operating temperatures of engines focus on mechanical performance rather than environmental or social impacts.