Final answer:
The claim that a key may be given to a guest of a guest with the same address ID as on the registration card is false. Hotel policy typically requires direct authorization from the registered guest for additional room keys.
Step-by-step explanation:
The statement that a key may be given to a guest of a guest as long as they show identification that has the same address as that given on a registration card is false. The standard protocol in hotel management requires the original guest to authorize additional keys for others.
Even if an ID shows the same address, it does not confirm whether the individual is entitled to access the room. Safety and privacy policies in the hospitality industry generally prevent issuance of keys without direct permission from the registered guest.