Explanation:

- Option 1: Section 197 of CrPC

- This section provides protection to judges, magistrates, and public servants from prosecution for acts done in the course of their official duty without prior sanction.

- It ensures that they can perform their duties without fear of legal harassment.

- Correct Answer: This option is the right one.

- Option 2: Section 179 of CrPC

- It deals with the jurisdiction of a court to try an offense partially committed outside its geographical limits.

- Option 3: Section 297 of CrPC

- This section pertains to the language to be used in warrants and service of summons and does not relate to prosecution of public officials.

- Option 4: Section 279 of CrPC

- This section is actually about reckless driving or riding on a public way under the Indian Penal Code, not the CrPC.