When people use their resources so that marginal benefits exceed marginal costs they

A. make rational economic decisions.

Explanation:

The marginal benefits refer to the maximum payment that a consumer will make for an additional good or service.

Marginal cost is the additional cost involved in manufacturing a product with an additional service, due to the additional manufacturing of the product.

These two measures determine how the value of a product should change; if the price increases or decreases due to marginal benefit or marginal cost.

For example, when buying one unit of a product the cost is usually higher than when buying multiple units. Likewise, when a product is purchased that has exclusive use or whose unit creation is high, the cost of the product will also be high due to its marginal benefit.

I hope this information can help you.

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.

answer the law of increasing costs;