The correct answer is (c) CPC (Amendment)Act, 1976.
The CPC (Amendment) Act, 1976 substantially widened the scope of summary trial. The Act amended Section 262 of the Code of Civil Procedure, 1908 to provide that a suit may be tried summarily if the value of the subject matter of the suit does not exceed Rs. 20,000. The Act also amended Section 263 of the Code to provide that a suit may be tried summarily if the defendant admits the claim of the plaintiff.
The CPC (Amendment) Act, 1976 was a significant amendment to the Code of Civil Procedure. The amendment widened the scope of summary trial and made it easier for plaintiffs to obtain a speedy and inexpensive resolution of their disputes.
The other options are incorrect. The CPC (Amendment) Act, 1999 amended the Code of Civil Procedure to provide for the appointment of Lok Adalats. The CPC (Amendment) Act, 2002 amended the Code of Civil Procedure to provide for the appointment of Debt Recovery Tribunals. None of these amendments substantially widened the scope of summary trial.