Finally, code-switching may have an exploratory function when the unmarked choice is uncertain – for instance, when little is known about an interlocutor’s social identity, or when there is a ‘clash of norms’, as in the following example where a local businessman meets up with a former classmate, now a university student and home for a visit. In this case, three languages are used: Kikuyu, Swahili and English. Myers-Scotton comments that Kikuyu, or perhaps Kikuyu/Swahili, would be the unmarked choices.
-What is the function of code switching here?