To meet single-location compliance, data must be archived after 30 days and accessed about once per year. Which Cloud Storage class and lifecycle action should you use?

The correct option is "Use Regional storage and add a lifecycle rule to transition objects to Coldline after 30 days." This is because the requirement specifies "single-location compliance," which means data should not be replicated across multiple regions. Regional storage fulfills this requirement. For data accessed about once per year, Coldline storage is the most cost-effective choice, as it is designed for data accessed infrequently (monthly or less) and offers lower storage costs than Nearline or Standard storage. A lifecycle rule to transition objects after 30 days automates the move from a potentially more expensive initial storage class to Coldline, meeting the archiving timeline. Multi-Regional storage is incorrect because it replicates data across multiple regions, violating the single-location compliance requirement. Nearline storage is also incorrect for the archived data because it's optimized for data accessed about once a month, whereas the requirement states "about once per year," making Coldline a more appropriate and cost-effective choice for such infrequent access.