Code-mixing is used -

Correct option is D

Code-mixing occurs when members of a group are bilingual or multilingual and use elements of two or more languages within the same conversation. This linguistic practice arises naturally in multilingual societies and is influenced by social or contextual factors.
Information Booster:
1. Code-mixing involves blending words, phrases, or clauses from different languages.
2. It reflects cultural and linguistic integration in multilingual settings.
3. Common in informal speech but may extend to formal contexts.
4. Enhances expression and allows speakers to convey nuanced meanings.
Additional Information:
· (a) Same language: Code-mixing requires at least two languages.
· (b) Language not understood: Irrelevant, as code-mixing depends on mutual understanding.
· (c) Common vernacular: Suggests a shared dialect but doesn’t describe code-mixing.