Deciding if a law is constitutional or unconstitutional is
a. chief justice
b. judicial review
c. review judges
d. court case

Deciding whether a law or act of citizens is constitutional or unconstitutional is termed as Judicial Review.

Option B

Explanation:

Judicial Review and its significance

Judicial review is actually is process through which the Court decides whether the citizens of a country has behaved lawfully under the predefined constitutional laws and if not, do their acts really mean to be called lawful.

Under the judicial law process, judges define whether the public act is considerable to be lawful or not. In the judicial law, the judges of the Administrative court looks over the aspects of following the constitutional laws and the updates demanded by the public body in a manner that are considered as unlawful.