The answer to your question, is D 
hope this helps :D
        
                    
             
        
        
        
<span>The correct answer is "none of the above". Low beams, windshield wipers, defroster/defrogger are useless during sunny days; reducing speed doesn't depend on the fact that it is sunny, it would be necessary if it was rainy/foggy or any other kind of weather, but a sunny one.</span>
        
             
        
        
        
Walking- slower and better for knees
running- faster and worse for knees
        
                    
             
        
        
        
Answer:
There a 2 types insulators and conductors 
 
        
             
        
        
        
Electroencephalogram (EEG)
Magnetic Resonance 
 Positron emission tomography (PET)
Arteriogram (also called an angiogram).
Spinal tap
Neurosonography
Ultrasound