Explanation:

- Section 73 of the Indian Penal Code (IPC) deals with solitary confinement.

- It states when a court can direct certain offenders to be kept in solitary confinement, subject to limits.

- Section 71 is about limitation of punishment of offences made up of several acts.

- Section 72 is about punishment for offences where the act is criminal only by reason of its relation to another offence.

- Section 74 relates to the limit of duration of solitary confinement, placing a cap on the maximum period.

- So, only Section 73 directly prescribes solitary confinement.