Which of the following actions is NOT recommended to prevent fatigue while driving?

Remaining still and quiet while driving is not recommended as a method to prevent fatigue because it can create a monotonous environment that may enhance feelings of tiredness. Engaging in active behaviors while driving, such as talking with passengers, can help stimulate alertness and keep the mind engaged. The other methods, like avoiding heavy meals and using sunglasses, contribute to maintaining energy levels and focus while on the road. Heavy meals can induce drowsiness, while sunglasses can reduce glare and improve visibility, leading to a more alert state. Thus, staying active and engaged during the drive is crucial in combating fatigue, making stillness and silence less effective.