The question refers to a circuit diagram and waveform figure, but the provided prompt does not include the actual circuit image or the input waveform/option waveforms. Since the behavior of the output across the diode depends completely on:

1. how the diodes $D_1, D_2$ are connected,
2. the polarity/orientation of each diode,
3. where $V_0$ is measured,
4. the exact shape and amplitude of $V_{in}$,
5. the option waveforms A–D,

it is not possible to derive the correct waveform uniquely from the text alone.

What would normally be done

For such a diode clipper/clamp circuit, the steps are:

1. Identify diode orientation and determine when each diode is ON/OFF.
2. Use the cut-in condition: $V_D \approx 0.6\text{ V (when ON)}$
3. For each interval of $V_{in}$:
   • if diode is OFF, analyze open-circuit behavior,
   • if diode is ON, replace it by a $0.6\,$V drop.
4. Sketch $V_0$ accordingly and compare with A–D.

But here the key data are missing

Because the circuit figure and options are absent, I cannot rigorously verify whether option D is correct.

Conclusion

With the information provided, the answer cannot be derived independently.

If you upload the circuit diagram and the option waveforms, I can solve it step-by-step and check whether D is correct.