Worn or bald tires affect your driving by:

Worn or bald tires significantly affect your driving by increasing both the stopping distance and the chance of a flat tire. Tires are crucial for maintaining traction on the road, especially during wet or slippery conditions. As tires wear down, their tread becomes shallow, which can lead to reduced grip. This lack of grip can cause longer stopping distances because the tires can't effectively channel water away and maintain contact with the road surface.

Additionally, worn tires are more susceptible to punctures or blowouts, increasing the risk of flat tires. Driving on bald tires where there is insufficient tread makes it difficult to navigate turns and can lead to loss of control, particularly when braking or accelerating. In contrast, the other choices do not accurately reflect the implications of having poor tire conditions, as worn tires do not improve gas mileage, do not enhance vehicle control, and certainly have a significant impact on driving safety.