Another way to confirm this is to recall the section numbers themselves, since Sections 265-A to 265-L are a well-known marker of when this chapter was inserted.
- The Criminal Law (Amendment) Act, 1993: This enactment cannot be the source, since no chapter numbered 265-A onward existed in the CrPC until well over a decade later.
- The Criminal Law (Amendment) Act, 2005: This Act is the one that added Sections 265-A through 265-L as an entirely new chapter, and its coming into force in 2006 is the commonly cited date for when plea bargaining first became available in Indian criminal procedure.
- The Code of Criminal Procedure (Amendment) Act, 2001: Amendments passed in 2001 addressed different aspects of criminal procedure and did not introduce this particular numbered chapter on plea bargaining.
- The Code of Criminal (Amendment) Act, 1993: As with the other 1993 option, no version of this chapter existed at this point in time, ruling this option out on chronological grounds alone.
Matching the well-known section range to its enacting statute again confirms the 2005 Act as the source.
So, the correct answer is The Criminal Law (Amendment) Act, 2005.