[BlueTemplar]

I would be very surprised if in the case you all stayed in C, your kid wouldn't adopt at least some of the culture/ethnicity/values of C, which would be through the language of C (or possibly a C-derived subculture/creole).

[petodo]

sure, that's expected, but it won't be thanks to language, but because of the enviroment regardless of language

[BlueTemplar]

But language is part of the environment : the communication in the environment and understanding of the environment is mediated through language !