Answer:
I think the answer is c because I had this question before and I think I got it right
 
        
                    
             
        
        
        
Answer:
Vestigial organs show traits that a species once needed to have to perform certain tasks
Explanation:
 
        
             
        
        
        
Answer:
vasoconstriction of capillaries. 
baroreceptors in the aortic arch.
Explanation:
Vasoconstriction of capillaries and baroreceptors in the aortic arch are the two quick responses of body to maintain normal blood pressure during hemorrhage. Vasoconstriction is very necessary for lowering acute blood loss during hemorrhage means escape of blood from a ruptured blood vessel as well as maintain body heat and arterial pressure. The function of baroreceptors is to respond to the change in the tension of the arterial wall when blood pressure changes.
 
        
             
        
        
        
The enzyme will work as a catalyst and make the chemical reaction happen quicker