Answer:
It’s 30 miles away. multiply the reciprocal number so it’s 39
Explanation:
 
        
             
        
        
        
Peces, algunos anfibios, moluscos, artrópodos, gusanos
        
                    
             
        
        
        
I am no expert but I think the correct answer is C.
        
                    
             
        
        
        
<span>The ventricular system consists of four ventricles that are interconnected in the brain. 
The third ventricle</span> is the portion of the ventricular system is found within the diencephalon. It is a median cleft in the diencephalon between the two thalami, and is filled with cerebrospinal fluid (CSF).
The hypothalamus is the gland located within the floor of the this ventricle.
        
             
        
        
        
This is because of B. Their cells are in direct contact with the environment.