The answer to your outstanding question is 3
 
        
             
        
        
        
The correct answer is a. Basidium. Those are held by f<span>ungi from the Basidiomycotina type.</span>
        
             
        
        
        
They often respond to Quorum sensing which is determined by the cell density. Bacteria cells secrete molecules that can be detected by other bacteria, Quorum sensing allows bacteria to sense the concentration of these signalling molecules to monitor the local density of cells. It used by bacteria to coordinate certain behaviors , such as the production of biofilms. 
        
             
        
        
        
Answer: Sustainable 
Explanation:
Once a product can serve the present moment and remain useful for an indefinite period without polluting the environment, or getting reduced in value, it can be said to be SUSTAINABLE.