Cultivation of sweet potatoes on Easter Island is an example of what?

a. the intricate religions of Micronesia

b. interisland marriages

c. Polynesian contact with South America

d. the isolation of Oceania

Cultivation of sweet potatoes on Easter Island is an example of Polynesian contact with South America, sweet potatoes or batats not grow in the wild therefore it porroves of contact between pre-columbian cultures and polynesians because South America is origin of that plant