Answer:
D. specific performance.
Explanation:
Specific performance - 
It is the act or the order by the court , in order to solve an any conflict for the law of contract . 
This is basically used to solve any issue related to land , property or any goods or services , this practice is used in case of any personal service . 
It helps the people to against any form of injustice or malpractice . 
It is a form of forced action , which helps with some previous transaction , and is one of the best remedy for the problem . 
 
        
             
        
        
        
Currency I think.  It's given in exchange for an item.
        
                    
             
        
        
        
Answer: See explanation
Explanation:
The optimal reorder point in units is calculated as the average daily sales unit multiplied by the delivery lead time.
In the question, we're not provided with the annual demand as this is vital in order to know the average daily unit. Therefore, the question is incomplete
 
        
             
        
        
        
Answer: (D) Industry convergence 
Explanation:
  The industry convergence is basically representing the fundamental growth in an organization and it basically helps in defining the various types of industries boundaries according to the business principle. 
 The industry convergence is the way for applying the knowledge by using the various types of technology related application in the industry. 
 According to the given question, the emergence of the smartphones industry with the different types of given application best illustrating the industry convergence concept. 
Therefore, Option (D) is correct answer.