The most logical answer to me would be A, however I recommend you don’t go with my answer JUST YET because this is an educational guess. Take time to think about my answer. Sorry if it’s wrong
        
             
        
        
        
This would be C. the Real Estate Agents. The engineering firms are only in charge of the construction of the home and the materials that are to be used for building it. The Architects, on the other hand, are responsible for the design of the home and the placement of the materials of the home. The lending institutions are focused more on providing the home inspector with money that he will need for a piece of property. So that leaves us with the Real Estate Agents. It is these people who deal with the sales of property which is why they are the source of business leads.
        
             
        
        
        
Answer:
Option B (150) is the correct answer.
Explanation:
Given:
Nominal GDP,
= $900
Money velocity,
= 6
As we know,
⇒ 
By putting the vales, we get
⇒                     
   
⇒           
⇒                           
 
        
             
        
        
        
Answer:
cannot be provided to one person without making it available to others as well.
Explanation:
A public good is a good that is non excludable and non rivalrous. It cannot be  provided to one person without making it available to others as well. If one person is using it, it does not stop other people from using it also. An example of a public good is roads. 
Public goods contrasts with club goods and private goods
A club good is a type of public good. It is excludable but non-rivalrous. For example paid streaming services are an example of a club good. Those who do not subscribe are excluded from using the service. But all subscribers have equal assess to the service
A private good is a good that is excludable and rivalrous.e.g. a privately owned car