Answer: Geert Hofstedes research on culture "did not assume a one-to-one correspondence between culture and nation-state". Which means option "a" is the most correct option.
Explanation: Geert Hofstedes research on culture, provides both the theoritical and practical comparison of workmen to the reward arena. But his research did not consider the influence a particular individual plays to the arena, his research only consider the influence the reward of the group plays to the reward arena. Even though his work is internationally accepted, but it still has some limitations.
It is considered that Geert, did not carry a one-on-one interaction with individuals, to understand the role each individual culture plays in the nation, which is a contextual facture to determine this research.