Asituation in which the market does not distribute resources efficiently is considered to be a market failure the public sector a business cycle a negative externality

The correct answer is A.

A market failure occurs when there is an inefficient distribution of goods and services in a free market, and it usually leads to a welfare loss. Typically, such situations arise when individuals pursue their self-interest and there are no redistribution measures established by economic authorities to control pure market outcomes and make these more egalitarian.

this isn't a question and if you're going to list things be kind and use commas.

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.