Meaning: 'Functions' refers to the specific roles or activities that something is designed to perform, in this case, the remote check-in process.

Wrong options:

• guests: 'Guests' is a plural noun referring to people staying at the hotel, which does not fit as it does not describe what remote check-in does.
• wallet: 'Wallet' is a noun that refers to a personal item for holding money and cards, which is unrelated to the function of check-in.
• bill: 'Bill' is a noun that refers to a statement of charges, which does not relate to the action of check-in.
• experience: 'Experience' is a noun that describes the overall feeling or event, but it does not describe the action of check-in itself.

Correct answer: queue

Explanation: The term 'queue' is a noun that fits grammatically as it serves as the object of the sentence, indicating what is being removed. It is contextually relevant as it describes the line that guests would typically wait in at the front desk.

Meaning: 'Queue' refers to a line of people waiting for something, in this case, the front desk service.

Wrong options:

• guests: 'Guests' is a plural noun that refers to the people staying at the hotel, which does not fit as it does not describe a physical line.
• wallet: 'Wallet' is a noun that refers to a personal item for holding money and cards, which is unrelated to the concept of waiting in line.
• bill: 'Bill' is a noun that refers to a statement of charges, which does not relate to the concept of a line or queue.
• functions: 'Functions' is a noun that describes actions or roles, which does not fit in the context of describing a physical line.

Correct answer: experience

Explanation: The word 'experience' is a noun that fits grammatically as it serves as the object of the sentence, describing what is enhanced by the remote check-in feature. It is contextually relevant as it refers to the overall satisfaction and enjoyment of guests during their stay.

Meaning: 'Experience' refers to the overall impression or feeling that guests have during their time at the hotel.

Wrong options:

• guests: 'Guests' is a plural noun that refers to the people staying at the hotel, which does not fit as it does not describe the overall impression or feeling.
• wallet: 'Wallet' is a noun that refers to a personal item for holding money and cards, which is unrelated to the overall experience of guests.
• bill: 'Bill' is a noun that refers to a statement of charges, which does not relate to the overall experience of staying at the hotel.
• functions: 'Functions' is a noun that describes actions or roles, which does not fit in the context of describing the overall impression or feeling.