There has been a rapid growth of cruising in recent years. The cruise ship provides a relatively confinedspace which is actively designed both to encourage passengers to stroll through observing one another and to payfor things or services. At port-side the opportunity to observe unfamiliar cultures is extended.      The growth of the cruising industry was particularly marked during the 1990s. The global threat of terrorismin the wake of September 11 has forced the industry to re-assess a situation in which passengers are less preparedto travel than they were in the past. However, there are signs of recovery. Cruise ships pride themselves on their24-hour service, the almost constant provision of food and entertainment, and their total devotion to the constantrelaxation of the passengers. Although entertainment and food is usually included in the cost of a cruise, there aremany additional opportunities for passengers to put their hands in their pockets. On the ship many spectacles arecreated for us, simply in order to create profit. Instead of active participation, passive consumption is encouraged.
71 The passage above is mainly about ________.
(A) what people can do on a cruise ship
(B) a difficulty facing the cruising industry
(C) the experience of different cultures
(D) active participation and individuality