A volunteer organization recruits volunteers who went to the earthquake-stricken area. The people who are most likely to be recruited are those under the age of 20. Those who are over 60 years old or have no experience in earthquake-stricken areas: are currently engaged in medical work or are physically fit. Males are more likely to be chosen. Based on the above conditions, the most likely candidates to be selected are. ['Xiao Zhang.19 years old. A college medical student studying at a university. At the age of 16, Wu Ji participated in the earthquake relief activities in his hometown. He rescued his classmates from the ruins in person.', 'Lao Zhao. Has more than 30 years of medical work experience. He has rushed to the earthquake-stricken area for medical work many times. He is still in good health after retiring at the age of 60. He has won many young people in outdoor hiking competitions in the community.', 'Xiao Li.23 years old. He has just graduated from college and currently works in an IT company. Not long ago, his city was affected by the surrounding earthquake. He felt a slight tremor and helped evacuate people in office buildings.', 'Old horse, 45 years old. Mountaineer enthusiast. He once climbed a mountain of 4000 meters above sea level. He is in good health. Although he has not rescued people in earthquake-stricken areas, he once rescued his companions during mountaineering activities.']