Most language researchers think the interactionist perspective offers the best

explanation for language. What does this perspective say?

Language is a result of nature and nurture.

Explanation:

Interactionist perspective: In sociology, the term "interactionist perspective" is described as one of the different theoretical perspectives that aims at the specific day-to-day interaction between different persons as a basis for societal development. However, the interactionist perspective aims at human beings as "social factors" instead of just aiming at societal roles.

It describes that the language of an individual is a result of nature and nurture because the genetic composition of every different person is different and the culture to which they belong.