This is obvious but the correct answer is B. Earth
HOPE I HELPED
        
                    
             
        
        
        
Incomplete dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
        
                    
             
        
        
        
Answer:
Explanation:
Diffusion is a substance movement from a region of high concentration to low concentration
 
        
                    
             
        
        
        
I believe it'd be A because the virus infects cells whereas the Giardia Lambia only releases toxins.