The main reason citizens have rights and responsibilities is to

a) allow the government to share power.
b) punish those who do not follow the rules.
c) keep the power of the country with its citizens.
d) to make the country the most powerful in the world.

C) keep the power of the country with its citizens.

Explanation:

This is the main reason a country protects the rights and responsibilities of its citizens. In a democracy, the power of the government and the state are considered to be found in the hands of its citizens. Therefore, the government is only able to "govern" because citizens agree to place power in the hands of their representatives. By protecting these democratic rights, the people can ensure that the government does not abuse the powers that were granted to it.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.