Learning the ways of one's culture, from helpless infant to skilled person, is called:

1. Socialisation is the process in which a helpless infant gradually becomes a self-aware, knowledgeable person skilled in the ways of the culture it is born into. 2. The stem describes exactly this: an infant turning into a skilled member of its culture. 3. Stratification ranks groups in a hierarchy, urbanisation is the growth of towns, and modernisation is a change in institutions; none describes learning a culture. _Source: NCERT Class XI Sociology, Introducing Sociology, Ch 4 Culture and Socialisation, "SOCIALISATION", p. 73_