A. Define data classification metadata.

This recommendation is based on the following considerations:

Data classification metadata in Salesforce allows organizations to classify fields based on the sensitivity of the data they contain. This classification can be used to indicate which data is sensitive and needs special handling or restricted access.
By using data classification metadata, sensitive data can be easily identified and filtered within the system. This helps in ensuring that access to sensitive data is properly controlled and in compliance with data protection regulations.
Data classification provides a standardized and scalable way to manage sensitive data across the organization. It can also be integrated with other data protection and security measures within Salesforce.