The system gives both producers and consumers important information they use in making decisions about how to allocate their resources and is determined by forces of supply and demand.

Free market.

Explanation:

As the name implies, this is known to be a market flow type or pattern where individuals are said to have charge and are in control of the pattern of their marketing. It is see also here that government is not having a high or upper hand in the affairs of their market dealings; therefore, governmental monopoly is directly cut off from them in this marketing system. It is known that laws also in this system are exchanged willingly amongst those doing the demand and supplying

in other words providing the sole basis for the economic system.

answer; common market;

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.