Answer:
They are all part of the Kingdom Animalia
Explanation:
Hope this helps
 
        
                    
             
        
        
        
Don't trust me on this one, but i'll say d.
        
                    
             
        
        
        
Answer:
The correct answer is the endocrine system. 
Explanation:
The sympathetic division of the autonomic nervous system and the endocrine system are the two prime systems that take part in the stress response.  
At the time of acute or chronic stress, the endocrine system first makes the hypothalamus to discharge CRH or corticotropin-releasing hormone into the bloodstream. The release of CRH further makes the anterior pituitary to discharge ACTH or adrenocorticotropic hormone into the blood. This further stimulates the adrenal cortex to discharge cortisol, that is, one of the glucocorticoid hormone into the bloodstream.  
The cortisol finally makes the organs and tissues present within the body to effectively cope up with the initial stress stimulus.  
 
        
             
        
        
        
Calcium. Calcium can be obtained from milk.