This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
The hormone associated with cold adaption is: 
Select and explain. 
A. Growth hormone., B. Thyroxine., C. Insulin., D. Melanocyte Stimulating Hormone
B: Thyroxine.
Answer: B: Thyroxine. 
Explanation: B i.e. Thyroxine