A. RING - रिंग
B. BUS - बस
C. STAR - स्टार
D. None of the above - इनमे से कोई भी नहीं
The topology that is least affected by the addition or removal of a node is a Mesh but here Mesh option not present ,If we exclude mesh topology, then the Star Topology is another topology that is less affected by the addition or removal of a node.