Yes, this is true!
For example, think about a situation in which your college is doing an experiment  using some toxic chemicals. Let's say that they stumble and fall, the container breaks and some of the chemicals are sprayed on you! you need a protective equipment then. 
        
                    
             
        
        
        
Answer: 46, 56, Female aged 19 to 30, and Both their carbon and protein needs
 
        
                    
             
        
        
        
Behavior is not a main factor
        
             
        
        
        
It is true because cross-ventilation is (almost) required in order for the users safety.
        
             
        
        
        
The answer I will go with is A