the statement or passage and then choose the best answer to the question. Answer the question on the basis of what is stated
Olied in the statement or passage.
Passage
Davos, Switzerland, home of the annual World Economic Forum, was once famous for its sanatoriums. Its
high altitude and long hours of sunshine helped ease the suffering of tuberculosis patients from around the
world. English novelist Robert Louis Stevenson completed Treasure Island while a resident at a Davos
sanatorium in 1882, and German Thomas Mann, a Nobel Prize winner in Literature, spent time in Davos in
1911 while his wife was undergoing treatment.
Question
According to the passage, why did Davos's sanatoriums attract so many patients?
O Reasonable cost
O Famous doctors
O Prestigious clients
O Favorable climate