It’s soft which makes It low energy
        
                    
             
        
        
        
Explanation:
27 °0 bc that how it is so this is the answer
 
        
             
        
        
        
Compound is defined as a pure substance which is made up of two or more different elements present in the fixed ratio and they can be separated into smaller substances by means of chemical processes.
Thus, a substance made up of two oxygen atoms for each carbon atom describes a compound as the substance is made up of two different elements which are present in the fixed ratio.
Hence, option c that is a substance made up of two oxygen atoms for each carbon atom describes a compound.