PLATO ANSWER: Alternative Goods
Hope this helps! I got it correct also so I know its correct!
 
        
             
        
        
        
A. credit transaction
    Your bank would pay the bill then either charge you for using their money or remove it from your "checking account" depends on the way you have it set up
        
             
        
        
        
Answer:
A monopsony is market where there is only one buyer, e.g. the government is the sole buyer for nuclear submarines in the US. 
The demand curve of a monopsony is similar to the demand curve of any other type of market, i.e. it is downward sloping. Since there is only 1 buyer, the demand curve is also the supply curve. If the monopsonist wants to increase the quantity demanded at a lower price, the supplier (or suppliers) must be able to lower its costs and that generally results in lower labor costs.