The judicial branch checks other branches of government by

determining laws' constitutionality.      

Explanation:

There are three branches in the Federal government in United States. They are ---

The Legislative branches of the Federal government makes laws for the citizen of the country.

The Executive branch executes the laws made by the Legislature, it also appoints various ministers to look after the interests of the nation.

The Judicial branch looks whether the laws made are constitutionally correct or not. It can interpret laws if it is unconstitutional.

All the three branches of the Federal government keeps a check on one another.

The Judicial branch sees if any laws passed by the legislature is violating the constitution or not. It can reject a law and can make it null and void if the law passed by the government violates any rights provided by the Constitution of America. It have the power to approve a law or reject a law based on the Constitution of America.

Hence the answer is ---

determining laws' constitutionality.

d

explanation:

it establishes america’s basic laws and fundamentals to its citizens.

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