In a Human Resources application, the Social Security Number (SSN) and date of birth details...

 Using the PropertyRead access control policy for the SSN and date of birth ensures that only users with the appropriate access (e.g., HR Manager) can view these details. This approach masks the information for other users.

 References:

Pega best practices for data security and access control recommend using PropertyRead policies to restrict access to sensitive information.

 Therefore, the correct answer is:

A. Use the PropertyRead access control policy for the SSN and date of birth.