Which of the following should be checked during pre-ride maintenance?

The correct choice is "All of the above." Each of the listed items—engine oil level, track tension, and battery voltage—plays a critical role in ensuring the snowmobile operates safely and efficiently.

Checking the engine oil level is crucial because it ensures the engine is properly lubricated, which prevents overheating and wear. Insufficient oil can lead to engine damage or failure.

Inspecting track tension is also important—it affects how the snowmobile handles and performs. A track that is too loose may slip or come off, while a track that is too tight can cause undue stress on the drive components.

Monitoring battery voltage is essential for starting the snowmobile and for the operation of electrical components. A weak or dead battery can lead to performance issues and may leave riders stranded.

Therefore, a thorough pre-ride maintenance check should include all these factors to ensure a safe and enjoyable riding experience.