Laws generally fall into the following categories:

a. Constitutional Law, Statutory Law, Ordinances, Regulations, Treaties, and Case Law.
b. Constitutional Law, United States Code, Federal Rules of Civil Procedure, and Circuit Courts of Appeals.
c. In rem Jurisdiction, Subject Matter Jurisdiction, In personam Jurisdiction, and Civil Rights.
d. Civil Law, Criminal law, Civil rights law, and Bankruptcy Law.

Answer : a. Constitutional Law, Statutory Law, Ordinances, Regulations, Treaties, and Case Law.