Asystem of beliefs or ideas that justifies the social, moral, religious, political, or economic interests held by a group or by society is
a.
a social movement.
c.
an ideology.
b.
a cultural lag.
d.
a vested interest.

The correct answer is C. An ideology.

Explanation:

An ideology can be defined as the different beliefs as well as values that a person or a group in society has. An ideology is usually based on reality's presumptions that eventually could have a real basis. The term is used in economic and political aspects as a way to describe their ideas' systems and in this way establish economic and political policies.

In political science, an ideology is utilized to make a description in terms of the political belief systems.  

b) a state law could be declared illegal if it contradicted the constitution.

explanation:

the conflict of this case originated when james w. mcculloch, a cashier of the baltimore branch of the second bank of the united states that the congress had chartered in 1816, refused to pay a tax imposed by the maryland state.

in the case, the state of maryland appealed that the establishment of a second bank was unconstitutional since the constitution didn't say anything about granting that power to congress. however, the case determined that even if such right wasn't specifically stated in the constitution, it was part of the "implied powers" of the government enunciated in article i, section 8.

the case also eliminated maryland's legislation to impose taxes to a national bank, asserting that even though the states retained the power of taxation, the constitution's laws are supreme and can not be controlled by the states, therefore, if a state law contradicts the constitution, it should be declared illegal.

explanation: