The answer is A, because some diseases are genetic, and Shannon could be at risk of an underlying disease.
        
                    
             
        
        
        
<span>Human genetics is the study of inheritance as it occurs in human beings. Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, population genetics, developmental genetics, clinical genetics, and genetic counseling.</span>
        
             
        
        
        
All of the characteristics of life, hope I’ve helped ;)
        
             
        
        
        
The spinal leaves the skull through the foramen magnum, and then goes into the vertebral column the first vertebra is called the ATLAS