During what condition is the transmission programmed to enhance traction by starting in higher gears?

The correct choice highlights a feature that is crucial for maintaining control and enhancing traction in slippery or low-traction conditions, such as snow. In snow mode, the transmission is programmed to start in higher gears to reduce wheel spin. This adjustment helps deliver power more smoothly and gradually, which is particularly beneficial on slippery surfaces where immediate high torque can lead to loss of traction. By starting in higher gears, the vehicle can better navigate icy or snow-covered roads, promoting safer driving conditions.

In contrast, descent control is designed primarily for maintaining a steady speed while going downhill, off-road mode usually optimizes the vehicle's capabilities for rugged terrain, and sport mode enhances performance and responsiveness for more dynamic driving but is not specifically tailored for improving traction in slippery conditions. Thus, the programmed response during snow mode effectively addresses the challenge of traction management in adverse weather conditions.