Which example of cultural diffusion is most supported by the map?

The English custom of drinking afternoon tea is practiced in South America.
Azulejos, the Portuguese art form that involves painting and glazing, is found in some South American buildings.
Students in some schools in North America learn Portuguese as a second language.
King’s Day, a Netherland’s custom that occurs every April 27th, is celebrated by people in various regions throughout North America.

The example of cultural diffusion most supported by the map is: King’s Day, a Netherland’s custom that occurs every April 27th, is celebrated by people in various regions throughout North America.

Based on the given options, the example of cultural diffusion that is most supported by the map is:

Azulejos, the Portuguese art form that involves painting and glazing, being found in some South American buildings.