Text A explains that the physical 'Ma' (space) in architecture and art is not nothingness, but an active element that creates tension and rhythm. Text B states that the temporal 'Ma' (silence or pause) in communication plays a crucial role in conveying meaning beyond words and fostering relationships. Common to both is the idea that 'Ma' is not simply 'nothingness' or 'absence,' but an 'active element' that brings richness and meaning to the whole when used intentionally. Therefore, the correct option best represents this common essence.