When the allocation of goods and services by a modern mixed economy is not efficient,
a) market powers can block beneficial gains.
b) monopolies can work to redistribute market equity.
c) governments may step in to resolve the market failure.
d) individuals of the markets can share equitable results.

C) governments may step in to resolve the market failure.

Explanation:

Nowadays, most economies around the world operate in a form of free market economy. While free market generally means that the market regulates itself, this does not mean that the government never intervenes. In fact, the involvement of the government can help in cases of market failure. This protects the economy of the country as well as the livelihood of the citizens.

facts: the 14th amendment

the 14th amendment addresses citizenship rights and equal protection of the laws.

the 14th amendment was intended to protect the rights of former slaves after the american civil war.

the 14th amendment was approved by congress in june of 1866 and ratified by the states on july 9, 1868.

the 14th amendment establishes that all persons born in the united states are citizens and are guaranteed all the rights of citizenship.

the 14th amendment establishes that the law protects all citizens equally.

in this case the passage of the 14th amendment   that was violated was the last part in which it states that there is equal protection of the law.