Which occurrence is an example of cultural diffusion

A current example of cultural diffusion is that carried out by the association Contraluz, founded some twenty-five years ago, in the city of Avignon (France). There Spaniards of origin, who had to migrate from that country can take Spanish classes and promotion of gatherings to practice it, exhibitions of painting and photography, lectures on the history and the current situation of Spain and the Ibero-American countries, screening of Spanish films and Latin American, promotion of music and dance, from the sevillanas and flamenco, to the Latin rhythms of the other part of the Atlantic.

im pretty sure the answer is b, i hope i < 3

treaties

explanation: