Final answer:
Assimilation; emigration and multiculturalism; pluralism are the pairs that are closest to being opposites.
Step-by-step explanation:
The pairs that are closest to being opposites in this case are a. assimilation; emigration and c. multiculturalism; pluralism.
In assimilation, groups conform to the identity of the dominant group, while in emigration, individuals leave their home country to settle in a new one. These concepts represent different approaches to integration and cultural blending.
Similarly, multiculturalism and pluralism involve the acceptance and recognition of multiple cultures. However, multiculturalism emphasizes coexistence with cultural diversity, while pluralism promotes the idea of equal standing and no distinction between minority and majority groups.