Questions 168~171 refer to the following passage. 
Adventure travel has become increasingly popular in recent years, with many people seeking outdoor recreational activities that involve physical exertion and offer a thrill of excitement. However, adventure travel can also come with inherent risks, and it is important to take steps to ensure that you are properly prepared and minimize the risk of injury or illness. 
 Some popular adventure travel activities include hiking, biking, and white-water rafting. These activities require a certain level of fitness and appropriate equipment to be carried out safely. For example, if you are planning to go hiking, it is important to wear comfortable, sturdy shoes and bring plenty of water and snacks. Biking requires a good quality helmet and a well-maintained bike. White-water rafting requires specialized equipment such as helmets and life jackets, and it is important to choose a reputable company with experienced guides.
 In addition to being properly equipped, it is important to take steps to minimize the risk of injury or illness while engaging in adventure travel. Staying hydrated is critical in all activities, and it is important to take frequent breaks to avoid overexertion. It is also important to take appropriate safety precautions, such as wearing a helmet while biking and following the guide's instructions while white-water rafting. 
 Furthermore, it is recommended to consult a healthcare provider or travel medicine specialist before embarking on any adventure travel. This is especially important if you are traveling to a location where there may be specific health risks, such as altitude sickness or water-borne diseases. A healthcare provider can provide advice on how to minimize these risks and provide any necessary vaccinations or medications.
 To sum up, adventure travel is an excellent way to challenge yourself and experience the great outdoors. However, it is crucial to prioritize your safety and take necessary precautions to minimize any risks of injury or illness. By being well-equipped, staying hydrated, taking appropriate safety measures, and seeking advice from a healthcare provider, you can ensure that your adventure travel experience is enjoyable, fulfilling, and safe.
【題組】168.What are some examples of adventure travel activities mentioned in the passage?
(A)Reading and painting.
(B)Swimming and sunbathing.
(C)Hiking and biking.
(D) Dancing and singing.