Languages can change when which of the following activities occur? i. When two or more languages merge together to form a new language. ii. When one language breaks into different dialects and eventually breaks into different languages. iii. When there is a lack of interaction between speakers of the same language. iv. When there is constant interaction between groups that speak different languages.

Languages can change through both separation and contact. When speakers have little interaction, their speech may diverge into dialects and eventually separate languages; languages can also merge or influence one another when their speakers interact. Therefore, all four statements describe ways languages can change, so the best answer is D, “i., ii., iii., and iv.”

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