C4. What is the language most commonly used in this household?

C4. What is the language mostly used in this household?: You should ask the respondent the language commonly used for communication among the members of the household. If the language is among the ones coded in C4, then write down the code in the two boxes provided at the bottom. In the cases where the respondent reports a language which is not one of the languages listed write down "15" in the two boxes.
Caution: Language commonly used should not be confused with tribe, i.e. a household might be Lomwe by tribe but the language commonly used in that household could be Chichewa. In this case you should record Chichewa as language commonly used.