Jason Had Slept In,and After a Hurried Shower Was Rushing

Multiple Choice

Jason had slept in,and after a hurried shower was rushing out the door to school when his mother stopped him and told him to wear a hat to cover his wet hair.Jason asked why and his mother replied,"It's cold outside and if you don't,you'll catch a cold." What was Jason's mother implying?

A) a fixed variation between having a shower and needing to wear a hat
B) a spurious relationship between sleeping in and developing a cold
C) a causal relationship between wet hair in the cold and being sick with a cold
D) a negative correlation between wearing a hat and having wet hair