The answer is B- body flexibility.
        
                    
             
        
        
        
The administration of cardiopulmonary resuscitation (CPR) is recommended during both respiratory and cardiac arrest.
<h3>What is cardiopulmonary resuscitation?</h3>
Cardiopulmonary resuscitation is a first aid procedure for cardiac arrest involving compression of the chest wall alternating with artificial respiration.
Cardiac arrest refers to a sudden and complete cessation of the heartbeat resulting in the loss of effective circulation of the blood.
CPR is a technique used to revive a patient suffering from cardiac and respiratory arrest before taking them to the hospital. 
Learn more about CPR at: brainly.com/question/13320397
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B. Pathogen since any of them can cause.
        
                    
             
        
        
        
Answer: When carbon dioxide binds to hemoglobin, a molecule called carbaminohemoglobin is formed. Binding of carbon dioxide to hemoglobin is reversible. Therefore, when it reaches the lungs, the carbon dioxide can freely dissociate from the hemoglobin and be expelled from the body.