D a is the correct answer I’m pretty sure
        
             
        
        
        
Answer:
A) Consider sending a printed message.
Explanation:
According to the scenario, the most sensible step to get an important response from a supplier after the supplier has not responded would be to send a printed message. 
This option would be ideal among the other alternatives above, as it demonstrates that you understand that the supplier may not have seen or been aware of your question, even if numerous e-mails have already been sent, and still awaits an answer , in accordance with professional and ethical communication standards.
 
        
             
        
        
        
Answer:
The answer is letter D
Explanation:
Under a P system, an order is placed to replenish the inventory position up to the target level T every P time periods.
 
        
             
        
        
        
Answer:
c) No change will occur in the market.
Explanation:
The correct option is : (c) No change will occur in the market
Reason: A price ceiling above the equilibrium price is a non binding price ceiling and it does not affect the market. No change in supply or demand occurs.
 
        
             
        
        
        
Answer:
maintain etiquette or speak slowly