Which of these health issues may be caused by sleep deficiencya. diabetes
b. lung disease
c. allergies
d. asthma?

A. diabetes, because sleep deficiency can cause the insulin-producing to stop working correctly and effectively, this causes the  glucose levels to increase, leaving you vulnerable to diabetes. 
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I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport