The warmth and redness of the surrounding area of the cut is due to the immune system.
Blood carries white blood cells, which attacks pathogens (Cause of infection) 
The surface become red  and warm as that is a conjugating area of blood. 
 
        
                    
             
        
        
        
Answer: excretion... could also be sensitivity
Explanation:
M ovement
R eproduction 
S ensitivity 
G rowth
R espiration
E xcretion (removal of waste such as by defacation or sweating) 
N utrition
 
        
             
        
        
        
I believe it is option C,,, but i’m not 100% sure :) good luck !!!