Answer:
b. determine the evolutionary relationships among species
Explanation:
Biologists through the analysis of characters obtained from molecular, morphological, embryological, physiological and behavioral analyzes look for the relationship between species and their origin.Through these coincidences phylogenetic trees are made.
 
        
             
        
        
        
As far as I know of B would be the correct answer but i am not positive 
Good luck!!
        
             
        
        
        
Smilus dramaticus: All of the Duchotomous keys one smiles :)
 .Smilus upsettus
 Smilus saddus
 Smilus winkus
 Smilus Saddest
 Smilus piratus
 Smilus valentinus
 Smilus suprisus
 Smilus toothyus
 Smilus traditionalis