Answer:
Explanation:Explanation: Classification of organisms is a hard task cause many organisms have their differences and similarities, whereby making it very complicated in classifying organisms.. All living organisms are classified into groups based on very basic, shared characteristics
 
        
             
        
        
        
The correct answer is option B, that is, functional group.  
A functional group refers to a part of a molecule, which is a classified/recognizable group of bound atoms. The functional group provides the molecule with its characteristics, in spite of what molecule comprises it, they are the centers of chemical reactivity. The functional groups in a molecule require to be determined when naming.  
 
        
                    
             
        
        
        
<span>The reaction to it promotes social unity.</span>
        
                    
             
        
        
        
Nervous system is divided into parasympathetic and sympathetic
        
             
        
        
        
The trait of the dental gap is present in apes but absent in hominins. 
<h3>
What do you understand by hominins?</h3>
The term "hominin" refers to a group that includes all living humans, all extinct human species, and all of our direct predecessors (including members of the genera Homo, Australopithecus, Paranthropus, and Ardipithecus). Sahelanthropus, Orrorin, and Ardipithecus are the earliest hominins. Many characteristics that set humans apart from other primates were absent in the ancestors of the human lineage. Sahelanthropus tchadensis from the Chad and Orrorin tugenensis from Kenya are the oldest hominins that are currently known. The skull of Sahelanthropus, which dates to between 6 and 7 mya, is mostly complete, and there are also some additional fragmentary bones.
To learn more about hominins, visit:
brainly.com/question/13959334
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