Norway (B) is known for having one of the lowest gender inequality levels globally and consistently ranks high on various gender equality indices, including the Gender Inequality Index (GII) by the United Nations Development Programme (UNDP). Norway has been recognized for its efforts to promote gender equality and implement policies to reduce gender disparities in various aspects of society.
Therefore, option B, Norway, is the most likely country to have the best score on the Gender Inequality Index (GII) among the provided options.