Which of the following is NOT one of the mental and physical capabilities needed for safe driving?

Flexibility is correctly identified as not one of the essential mental and physical capabilities required for safe driving. While flexibility may play a role in certain aspects of vehicle operation, such as moving about in the vehicle or adjusting to various driving conditions, it is not considered a fundamental capability.

In contrast, information processing is crucial because it involves the driver's ability to perceive, comprehend, and respond to various stimuli in the driving environment. Decision-making is equally important, as drivers must make quick and safe choices based on their observations and the actions of other road users. Balance, particularly in managing the vehicle while navigating different terrains or conditions, is also vital for maintaining control and ensuring safety on the road. These skills are integral for a driver to safely assess situations, respond appropriately, and maintain control of the vehicle under various circumstances.