Marginal productivity theory assumes that a worker’s income is a function of the contribution of that worker to the value of the output. in business this is called the approach .

probably not? : o

unless you work at a circus or any other job like that. c:

maybe..

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.