Answer:
cholesterol.
Explanation 
Options a, d, c, and e all contains amino acids units. They are therefore  made up of protein  structure. cholesterol contains alcohol and steroids. it belongs to the steroid lipid  family unlike other options  that belong to protein family. 
 
        
                    
             
        
        
        
It’d be at least 70 million years.
        
             
        
        
        
Answer: association neurons
Explanation: