Which factor can improve the safety of using a jack?

Using a jack on a secure surface significantly improves safety while performing vehicle maintenance or repairs. A stable foundation ensures that the jack does not slip or tip over under the weight of the vehicle being lifted. It reduces the risk of accidents and injuries that can occur if the jack fails due to instability.

Poorly lit areas can obscure hazards and make it difficult to properly position the jack, which might lead to unsafe conditions. Using a jack from a different brand might introduce compatibility issues or differences in operational safety standards, potentially compromising safety. Leaving the vehicle in gear can give a false sense of security, as it does not prevent the vehicle from rolling if there is an issue with the transmission or if the brakes fail. Therefore, maintaining a secure surface is crucial for safe jack operation.