The correct answer is <span>D. circulatory, respiratory, nervous, endocrine 
The other systems mentioned in the first three examples don't maintain oxygen levels at that body strain level.</span>
        
                    
             
        
        
        
B. 
The windier part of the year lasts for 6.4 months, from October 13 to April 24, with average wind speeds of more than 8.3 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 10.3 miles per hour.
        
             
        
        
        
Answer:
When the sympathetic and parasympathetic systems are in balance, the tendency is to rest often and easily allowing for renewal and healing to the body. The balance between the two systems is a key step toward greater health and wellness!
Explanation: