Which one of the following groups of plants was domesticated in the ‘New World’ and introduced into the ‘Old World’?

The Columbian Exchange, initiated by Christopher Columbus's 1492 voyage, refers to the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas (New World), West Africa, and the Old World (Europe, Asia, and Africa) during the 15th and 16th centuries.

Tobacco, cocoa, and rubber are examples of plants that were originally domesticated in the New World and subsequently introduced to the Old World as part of this exchange.

Hence, option A is the correct answer.

Sources:

• Wikipedia - Columbian Exchange