The word "internal" refers to something that is happening or existing within a person or organization. In the context of the given options, "internal" is the only word that fits this definition. "Eksentrik" means eccentric, which refers to someone or something that is unconventional or odd. "Individual" refers to a single person or thing. "Konsensus" means consensus, which is a general agreement among a group of people. "Keserasian" means compatibility, which refers to the ability of things or people to exist or work together without conflict. Therefore, "internal" is the correct answer as it is the only word that relates to something happening within a person or organization.