if some enzymes involve in dehalogenation . then in which category of specificity can we add the enzyme 
1)group 
2)linkage 
3)stereochemical
4)absolute 

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Please find below the solution to the asked query  
          
If some enzymes are involved in dehalogenation, they come under linkage specificity category. This is because they will act on a particular chemical bond (C-halogen bond) to cause dehalogenation.

Hence, option (2) is correct. 

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