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Not enough information is given but my mom is in the medical feild and she says that a condition common with age is presbyopia. It causes the leanses in your eye to become less flexable and less able to thicken therefore less able to focus on near by objects. Another is catteracts which I assume you already know about so I will not explain.  
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Hold ur breath, but usually they say getting scared by someone
        
                    
             
        
        
        
The answer is C
the best is the NFL super bowl
        
             
        
        
        
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To find and test pulse would be wrist and neck 
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Secondary bacterial infections is bad for any body but even worse for elderly because there body can't fight it off because there bodies are wore down the human life cycle is kinda like a car you by it brand new then as it gets older it starts to brake down and ware out  then it finally brakes down for good