Arrest can be made without warrant by:

The power to arrest without a warrant is a significant legal authority, typically granted to specific individuals or classes of officers under particular statutes. The correct option is Officer under the Act. Many specific laws (Acts) empower designated officers, beyond just general police constables, to make arrests without a warrant for offenses committed under that particular Act, ensuring effective enforcement of the specific legislation.

• Police constable only: While police constables can arrest without a warrant, 'Officer under the Act' is more precise for specific statutory powers.
• High Court judge: Judges issue warrants and preside over trials; they do not typically make arrests.
• Market committee chairman: This is an administrative or regulatory role, not vested with general powers of arrest.