Studying the effect of increased income can be difficult because purposive social experiments are often not possible. However, your textbook notes a set of natural experiments on the effect of income, which were analyzed by economists, including Imbens, Rubin, and Sacerdote. In these studies, an increase in income came from

Gambling

Explanation:

Gambling is the act of incurring money or a valuable item at an event or an occasion with an uncertain outcome and with the intent of winning.

Gambling

Explanation:

Though gambling has social costs which include the Psychological aspects of gambling for instance now gamblers may have depression when they loose a lot of money into gambling and which may eventually leads to loss of lives Also, the the social cost if gambling will allow an increase in criminal rate. Nonetheless, according to some economists gambling can be used as economic development if gambling in been monitored and structure in a good way. Some of this economists believes that gambling can increase income rate and also the government revenue.

1) d

2)c

3)b

4) a

5)c

6) c

answer; /// working class;