Answer:
heteroglossia
Explanation:
Heteroglossia -
The term is given to explain the presence of many varieties of language within a single language .
The term heteroglossia was firstly given in 1934 by the Russian literary theorist Mikhail Bakhtin .
The person is called a heteroglossia , when he is able to easily adapt or speak many language , as in the case of David .
David can very well who the linguistic habit of many languages .