Answer:
He had a congenital condition.
Explanation:
a congenital disorder, is a condition present at birth regardless of its cause.[3] Birth defects may result in disabilities that may be physical, intellectual, or developmental.[3] The disabilities can range from mild to severe.[7] Birth defects are divided into two main types: structural disorders in which problems are seen with the shape of a body part and functional disorders in which problems exist with how a body part works.
 
        
             
        
        
        
Answer:
Friction is the answer to the blank space
 
        
                    
             
        
        
        
Geriatrician's are specialist in the field of study of the aging also known as <span>gerontology.</span>
        
                    
             
        
        
        
The answer to your question would be B. 15-20%