The correct answer is (a). The Criminal Procedure Code is a central law, which means that it is made by the central government and applies to the whole country. The other options, (b), (c), and (d), are all state subjects, which means that they are made by the state governments and apply only to the states in which they are made.
The Criminal Procedure Code is a code of criminal procedure in India. It was enacted in 1898 and has been amended several times since then. The code sets out the procedures for investigating and prosecuting criminal cases in India. It also sets out the rights of accused persons and the powers of the police and the courts.
The police are a state subject in India. This means that the police force is organized and managed by the state governments. The central government does have some control over the police, but this is limited. For example, the central government can issue directions to the state governments on matters relating to the police, but it cannot interfere in the day-to-day running of the police force.
Law and order is also a state subject in India. This means that the responsibility for maintaining law and order lies with the state governments. The central government does have some role to play in maintaining law and order, but this is limited. For example, the central government can deploy the army to help the state governments in maintaining law and order, but it cannot take over the responsibility for maintaining law and order from the state governments.
Prisons are also a state subject in India. This means that the responsibility for running prisons lies with the state governments. The central government does have some role to play in running prisons, but this is limited. For example, the central government can set standards for prisons and inspect prisons, but it cannot take over the responsibility for running prisons from the state governments.