I think it's D. Sry if you get it wrong though
        
             
        
        
        
Answer:
Bisexual flowers:
In order to make a new seed male gamete present in a pollen grain units with the female gamete present in the ovule.
Unisexual flowers: 
Unisexual flower can self pollinate where both male and female flowers are present on the same plant. Stigma of the female flower can be pollinated by the pollen of the male flower present on the same plant.
 
        
                    
             
        
        
        
with this option given I don't think there is an odd one
 
        
                    
             
        
        
        
Answer:
Explanation:
Cell division.
The others are just to confuse you.
 
        
                    
             
        
        
        
The heat to evaporate the water in the sweat comes from the skin and provides a cooling effect. The body then does not overheat. hope it help