The correct answer is A) Asia.
The travels of Marco Polo focused on the exploration of Marco Polo in Asia.
“The Travels of Marco Polo” is a travelogue or a King of a diary written in the 13th century by Rusticiano, based on the stories told by the Italian explorer Marco Polo during his explorations and travels through Asia from 1271 to 1295. The book relates Marco Polo’s adventures and fantastic stories in this part of the world totally new for the European traveler.