geert hofstede compared cultures on five different dimensions related to a continuum of individualism and collectivism. compared to the japanese, americans were

I believe the answer is: A. . less assertive and competitive

Japanese culture tend to be more assertive and competitive because most of families in Japan felt a sense of 'honor' or 'respect' by comparing their children accomplishment with the children from other family.
This make them became really assertive toward the children's performance at school which led to the competitive nature that developed as they grow up