Answer: Differentiated
Explanation:
 Differentiated Marketing is a form of marketing where a business offers several products to meet the needs of the different segments found in a market. Large firm's can produce several products to meet the need of the various market segments which would increase purchase of their products.
 
        
             
        
        
        
Answer: Replace that cash crop 
Explanation:
If a person provides a better cash crop for the market, and made the cash crop you want to get rid of look unconvincing, they will be sucessful 
 
        
             
        
        
        
Answer:
b
e
Explanation:
A perfect competition is characterized by many buyers and sellers of homogenous goods and services. Market prices are set by the forces of demand and supply. There are no barriers to entry or exit of firms into the industry.  
In the long run, firms earn zero economic profit.  If in the short run firms are earning economic profit, in the long run firms would enter into the industry. This would drive economic profit to zero.  
Also, if in the short run, firms are earning economic loss, in the long run, firms would exit the industry until economic profit falls to zero.