Answer: All organic compound depends on  H-bonding with water. more stronger H-bonding with water more will be soluble. 
Explanation:
1.	It depends primarily upon the function groups of that compound. It also depends on the size of the compound.  
2.	some organic compound which soluble in water for example: alcohols, ethers, carboxylic acids.  Because of the functional groups attached to the organic structure (the C-H backbone) are what effect the solubilities.Like carboxylic acids and alcohols form hydrogen bonds with the water, helping to solubilize it.  
3.	Take alcohols for example: methanol, ethanol, and isopropanol are all completely soluble in water. By the time you get to butanol and some of the larger alcohols, including those with more complex structures, they tend to be less soluble.  
 
        
             
        
        
        
The correct answer is option b, that is, triggered by changes in the weather.  
Hibernation refers to a state of lower metabolism and inactivity usually witnessed in endotherms. This condition is featured by a slow heart rate, slow breathing, low metabolic rate, and low body temperature. It assists the majority of the endotherms to thrive in the cold seasons. For example, hibernation of a bear in winters. Therefore, weather change can stimulate hibernation.