Decision making "at the margin" means making a choice based on of a decision.

a. the total benefits

b. the total costs

c. comparing the total benefits and costs

d. comparing the additional benefits and costs

d. comparing the additional benefits and costs

Explanation:

The correct choice is D because you are making a choice when the marginal benefits are greater than the marginal costs . At this point, opportunity costs are lowered and you  want to get the most out of your resources. It is a point when you are thinking about what an additional action means for you if you take it versus not at all.

all of them make sense but, i would have to say ask someone who has been there/or lives there, and/or read recent newspapers from that city.

hope this !

the correct answer is economics is a game without winners or losers.

unlike sports or games economic is a game without losers or winner rather it is a game where everyone wins. parties of business doing businesses exchange money with each other and hence exchange is done on the basis of goods. one party takes the goods and other sales it so there is winner on both sides. each party values more highly the good it gets than the good it gives up. both sides exchange only because both intend to increase their value. so there is no concept of lose or win.