Since the voltage waveforms are missing from the question text, we deduce the logic gate based on the provided probable answer and the standard AIPMT 2006 problem. In the original problem, the output waveform C is at a high logic level (1) only when both input waveforms A and B are simultaneously at a high logic level (1). For all other combinations (0,0; 0,1; 1,0), the output is at a low logic level (0). This corresponds to the truth table of an AND gate ($Y = A \cdot B$).