Jurisprudence is defined as

the duties and obligations owed by a citizen

the science and philosophy of law

the enactment of laws by a government body

adjudication of law suits

Jurisprudence is a word of latin origin and it can be translated as "knowledge of the law" it is the theory and philosophy behind the law, and the knowledge of the law and of the principles that underlie it.

The best answer is:

the science and philosophy of law