Which constitutional principle is supported by amendment iv?

a. balance between government and individual freedom
b. system of checks and balances
c. separation of powers
d. representative democracy

Balance between government and individual freedom is the constitutional principle supported by Amendment IV.

Option A  

Explanation:

The fourth amendment is about securing people's rights and freedom, the amendment is in regard to the protection of people from the state's actions that are not based upon the reason and probable cause the crime or any other kind of legal offence has been committed. It is to maintain individual safety along with national safety as a whole.

Like after 9/11 National Security Agency (NSA) increased their efforts for public safety but without disturbing individual freedom. So, both these things are opposite to balance but are possible.

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

i think they came to washington to protest