CBAG® refers to which type of baggage in Ryanair’s services?

The correct choice identifies CBAG® as a 10kg bag specifically intended for check-in only. In Ryanair's baggage services, CBAG® is designed to accommodate travelers who need extra baggage beyond the standard allowances. This option is particularly beneficial for passengers who may have additional personal items or souvenirs they wish to take on their journeys, as it provides a straightforward and economical method for checking additional luggage.

Understanding the context of CBAG® allows travelers to make informed decisions about their baggage needs, especially when planning for trips where extra space is required. The other options do not align with Ryanair's definition or usage of CBAG®, which is distinct as a check-in baggage service rather than something intended for cabin use or a request for an additional seat.