They are soluble. Often, they are of an appropriate polarity and size as well. 
        
                    
             
        
        
        
Like D. Codon is the answer
        
             
        
        
        
Answer:
b. multicellular fungus
Explanation:
In a recent study, it was discovered that there was a genetic relationship between multicellular organisms like protozoa and animals and fungi have a common ancestor as their ancestors had contact about 1.1 billion years ago. 
Therefore, the organism that was most likely the most recent common ancestor of all animals is multicellular fungus