Read the text to answer questions 24-28

          Mr. And Mrs. Charles were on a tour to Europe. They were travelling on a guided tour to five countries. They were going to travel through the Netherlands, Belgium, Germany, Switzerland, and France for two weeks. The guide for the tour was a swiss.
          On the first day of the travel the guide told them to check their passports, their traveller cheques and their foreign cash. He told them to keep them safety.
          They traveled in a comfortable coach with a toilet, music and video. The guide stopped the coach at many famous places. He explained the cultural importance of the places. They stayed in big hotels for the might and ate in the restaurants.
         On the way, they stopped at a small restaurant for lunch. In big towns, they went for shopping. They bought many souvenirs for their friends. They enjoyed the twoo-week tour tremendously.

‘He explained the cultural importance of the place’ (Paragraph 3) The word ‘He’ refers to ....