0. The most important aspect of communication- listening, can be improved by
Listening improves with focus, relevant and interesting material, and effective delivery. All factors together contribute to active and improved listening.
Option A: making the attention fully paid
Incorrect – Important but alone not sufficient.
Option B: making the communicated material novel-interesting and need based
Incorrect – Helps, but not the only method.
Option C: making voice effective and impressive
Incorrect – Effective voice helps, but is only one part.
Option D: all of these
Correct – All contribute collectively to better listening.