Two questions, two kinds of work
Validation: What evidence supports the control under the intended conditions?
Verification: How do we check that the system is implemented as intended and functioning within its established arrangements?
The type of activity and the applicable requirements depend on the operation. Keep the purpose clear when describing the work in your system.
Use this as a team discussion
Ask each person to explain the reason for the answer. Then discuss a similar question in your operation and which information or records would help you work through it.
This informal learning activity does not issue a certificate. Arrange project-specific technical questions separately.