What feature of Delta Lake allows querying data at a specific point in time?

The feature of Delta Lake that allows querying data at a specific point in time is known as time travel. Time travel essentially enables users to access and retrieve previous versions of data as it existed at any given timestamp or version number. This capability is particularly useful in data analytics and data management scenarios where tracking changes over time is essential.

With time travel, you can run queries against older data states without the need to perform complex backups or recoveries. It streamlines the process of data analysis by allowing users to revert to prior versions, making it easier to conduct audits, troubleshoot issues, or analyze historical trends accurately.

In contrast, while historical records, version control, and data snapshots are related concepts within Delta Lake and data management, they do not specifically denote the ability to query data at a distinct point in time as explicitly as the time travel feature does. Time travel encapsulates the core function that enables such temporal queries, making it the correct choice.