Final answer:
It is important to know which person in a culturally and linguistically diverse family to speak to. This refers to the concept of kinship terminology and the distinction between terms of reference and terms of address.
Step-by-step explanation:
When working with a family who is culturally and linguistically diverse, it is important to know which person in the family you should speak to. This social custom/belief refers to the concept of kinship terminology and the distinction between terms of reference and terms of address.
Terms of reference are used to describe the relationship between individuals, such as "mother" or "uncle," while terms of address are used to speak directly to their kin, like "Mom" or "Uncle." This distinction is important because it designates relationships between individuals that carry responsibilities and privileges in different cultures.