Answer:
I believe the quote that does not support the inference that living in Alaska can be a challenge is:
c) "During this time, Alaskans spend a lot of time outside enjoying nature."
Step-by-step explanation:
Quotes A, B, and D all talk about the challenges of living in Alaska. Alaskans need to worry about their vitamin D intake, about adjusting their lifestyles to lack or excess of light, etc. However, option C does not talk of a challenge or a difficulty. If we read option C without the context given in the passage, we would not at all guess that it has anything to do with a difficult, demanding lifestyle. It sounds as if Alaskans simply get to have fun in nature. For that reason, letter C is the one that does not support the inference that living in Alaska can be a challenge.