Final answer:
The purpose of a vehicle log is all of the above, as it records usage, maintenance issues, and inspections to keep track of vehicle condition and compliance.
Step-by-step explanation:
The purpose of a vehicle log is D. All of the above. A vehicle log is a comprehensive record that serves several important functions. It is used to maintain information about when a vehicle is taken out and when it is brought back in, which helps in tracking its usage. Additionally, a vehicle log is crucial for keeping a detailed record of any maintenance issues the vehicle may encounter, as well as a history of repairs and services it has undergone. This can be vital for maintaining the vehicle's warranty and resale value. Finally, the vehicle log is used to document inspections, ensuring that the vehicle remains safe and roadworthy, and complies with legal requirements.