Read the following context and choose the best option to answer the question.
Context: Every other kind of sport had people outside ; hikers , bikers , boaters , rollerbladers , you name it . So where did the rock climbers go ? Now that there are indoor climbing walls , has everybody who likes to climb moved indoors ?
Question: Why is it important for athletes to spend time outdoors ?
Options: 
A. Inclement weather can be an issue .
B. None of the above choices .
C. Many people prefer the ease of conditioned air .
D. It is easier to do some sports while outside .


B