The answer is B. Sweden had the highest representation of women in its national parliament in 2000.
According to data from the World Bank, in the year 2000 the proportion of seats held by women in Sweden's national parliament was 42.7%. In Canada it was 14%; in the United States' national legislature it was 14% and in Japan it was 7.3%.
The proportion is the number of seats held by women expressed as a percentage of all occupied seats.