There are choices for this question namely:
Ativan 1 mg orally 
<span>Nitroglycerin SL </span>
<span>Serum electrolytes </span>
<span>Chest x-ray
</span>
The correct answer is "Nitroglycerin SL". The SL means sublingually. The physician will still order Nitroglycerin to be taken sublingually whenever there is chest pain. The patient's medication may have been expired being stored for 12 months now. Ativan or Lorazepam will not be given as this is a sedative and there is no indication for sedatives.
Serum electrolytes and chest xray will not be requested as these diagnostic examinations are not usually done in patients with stable angina.
        
             
        
        
        
Explanation:
villi are small finger like structures in the small intestine 
 
        
                    
             
        
        
        
Having two copies of the mutated genes cause sickle cell anemia, but having just one copy does not, and can actually protect against malaria - an example of how mutations are sometimes beneficial. 
The majority of mutations have neither negative nor positive effects on the organism in which they occur. These mutations are called neutral mutations. Examples include silent point mutations. They are neutral because they do not change the amino acids in the proteins they encode.
Hope this helped :)
        
             
        
        
        
A 
it's the most grammatically correct and understandable