(A) Country 'A'
Country A has the highest HDI Rank of 73 in the world, which means it is ranked highest (lower rank number = better HDI) among all six countries listed in the table.
In HDI ranking, a lower rank number indicates a higher/better position. Country A has rank 73, which is the smallest (best) rank number among all six countries (73, 130, 148, 154, 143, 134). Students often confuse "high rank" with a large number — remember, Rank 1 is the best. Country A also has the highest GNI per capita ($12,707), which supports its superior HDI position.