Answer: option B) Secretin
Explanation:
Secretin is an enzyme formed by the upper intestinal layer and gets transported by blood to the PANCREAS which it stimulates: causing the flow of pancreatic juice, also the flow of bile and intestinal juice but to a lesser extent.
Alongside Gastrin, Secretin is one of the hormones of the Gastrointestinal tract; but their functions differ 
Therefore, Secretin is the answer 
 
        
             
        
        
        
<span>An ecosystem consists of a population of organisms and its
physical environment, and a population is made up of many different
communities of organisms. Every one of the creatures of similar species
living  together that live in a particular biological system are known
as a populace The people in the populace contend with one  another for
sustenance, settling space, and mates.</span>
        
             
        
        
        
It happens during the s phase
        
             
        
        
        
Answer:
Fungi 
I hope this helped :)
        
             
        
        
        
Water running from a drainage to basin D