It is believed that around 300 c. e., polynesians may have reached the western coast of where they learned about sweet potatoes.

a) africa
b) southeast asia
c) south america
d) europe

The correct answer is South America

Some geographers estimate that around 300 C.E., Polynesians may have reached the western coast of South America, where they learned about the sweet potato. It has never been completely proven, but there is a lot of evidence in favor of this theory.