Final answer:
The guest check would display 'Not a Member'.
Step-by-step explanation:
The correct option would be option B) 'Not a Member'.
If a member has not registered their account, it means they do not have an account and therefore cannot be recognized as a member. So, the guest check would display 'Not a Member'.
For example, if a person tries to log in as a member but has not yet registered, the system would indicate 'Not a Member' on the guest check.