Correct Answer: (b) Nagaland
Solution:According to the Census 2001, during 1991-2001, the de- scending order of the four States with highest growth rate was: 1. Nagaland (64.41%), 2. Sikkim (33.06%), 3. Manipur (30.02%), 4. Meghalaya (29.34%). As per Census 2011, the State with the highest decadal growth rate is Meghalaya (27.9%), while the State with the highest decadal growth rate among the given States is Uttarakhand (18.8%).