Correct Answer: (a) 1930, Hamilton
Solution:The Commonwealth Games were first organized in 1930 in Hamilton. At the beginning, these were known as the British Empire Games, which have been known as the 'Commonwealth Games' since 1978. The Commonwealth Games could not be organized in the years 1942 and 1946 due to the second world war. Since then, it has been organised at every interval of four years. The number of members of the Commonwealth is 56.