Changes in the price level: A. increase the level of aggregate supply in the long run.
B. increase the level of aggregate supply in the long run only at very high level g

answer; is usually (less than) the socially optimal level of consumption;

the u.s. census bureau produces data on the population and economy nationwide. it can you to analyze the kind of people living in your neighborhood. it does not show you the market of people willing to buy your product or an existing market for your product. that will require more market research. the census bureau only gives you an insight to the demographics in your area.

answer; societal marketing;