You are tasked with creating a cost-effective, long-term data storage solution for an organization that needs to store petabytes of archival data. The data must be encrypted and infrequently accessed. What GCP storage solution would be most appropriate?

*Explanation:* For a cost-effective, long-term data storage solution for petabytes of archival data that requires encryption and infrequent access, the most appropriate GCP storage solution is to use **Cloud Storage with Archive class and Customer-Managed Encryption Keys (CMEK) (option D)**. This option provides the necessary cost savings and encryption while accommodating infrequent access. Options A, B, C, and E are not as cost-effective or suitable for long-term archival data storage.