Choose the word (A, B, C or D) that best fits the blank space in the following passage.

Two British policemen were (19)_______ to investigate a flying saucer on March 31, 1989, the day before April Fool’s Day. When the policemen arrived at a field in Survey, they saw a small figure wearing a silver space (20)________ walking out of a spacecraft. Immediately the police ran off in the opposite direction. Reports revealed that the alien was in fact a small person, and the flying saucer was a hot air balloon that had been specially built to look (21)________ a UFO by Richard Branson, the 36-year-old chairman of Virgin Records. Branson had planned to (22) _______ the balloon in London’s Hyde Park on April 1. However, a wind change had brought him down in a Survey field. The police received a lot of phone calls from terrified motorists as the balloon drifted over the motorway. One lady was so (23)_____ by the incident that she was crying as she was (24)______ the UFO to a radio station.