Explanation:

- Section 320 of the Criminal Procedure Code (CrPC) lists certain offences that can be compounded, meaning the victim can agree to drop charges against the accused.

- Option 1: Not compoundable

- Offences not in Section 320 are typically serious in nature and cannot be compromised.

- These include crimes like murder or rape, where the public interest is paramount.

- Option 2: Compoundable with the permission of the court

- Some offences require court permission to ensure fairness.

- These often involve the potential for undue influence or coercion.

- Option 3: Compoundable by the Court of Sessions

- There's no general provision granting the Court of Sessions specific compounding powers.

- Option 4: Compoundable by the High Court

- High Courts can quash cases but typically not compound offences directly unless it's under inherent powers in exceptional cases.

Option 1: Not compoundable seems correct.