Id say it would be 59 milliseconds
        
                    
             
        
        
        
Mutualism since the clown fish and the anemone both benefit from each other.
        
             
        
        
        
Answer: Directional selection 
Explanation:
In the population genetics, directional selection is the mode of selection during which the extreme phenotype are favored more than the other phenotype.
This causes the allele frequency to shift towards the time in the direction of that particular phenotype.
Here, in the question the acid tolerant plant species is favored over the other phenotype.
Hence, the correct answer is option D