Introduction:
This question is related to the domestication of plants in the New World and their introduction into the Old World. The New World refers to the Americas, while the Old World refers to Europe, Asia, and Africa. Among the given options, the correct answer is option 'A', which includes tobacco, cocoas, and rubber.

Explanation:
The domestication of plants involves the cultivation and breeding of wild plants for human use. Over thousands of years, different societies around the world have domesticated various plants for food, fiber, medicine, and other purposes. The exchange of plants between different regions has been an important aspect of human history, leading to the spread of crops and the development of agriculture.

Plants domesticated in the New World:
The New World, particularly the Americas, has been the origin and center of domestication for several important crops. Some of the key plants domesticated in the New World include:

1. Tobacco: Tobacco was first domesticated by indigenous peoples in the Americas. It was cultivated for its leaves, which were used for smoking, chewing, and as a sacred plant in religious ceremonies. With the arrival of Europeans in the Americas, tobacco was introduced to the Old World and became a major cash crop.

2. Cocoa: Cocoa, also known as cacao, was domesticated by ancient civilizations in Mesoamerica, including the Mayans and Aztecs. The seeds of the cocoa tree were used to make chocolate and were highly valued in the indigenous cultures. Like tobacco, cocoa was brought to Europe by the Spanish conquistadors and became a popular commodity.

3. Rubber: Rubber trees were originally native to the Amazon rainforest in South America. Indigenous peoples in the region were the first to discover and utilize the latex produced by the rubber trees. Rubber was later introduced to the Old World by European explorers and became an important industrial material.

Plants in option A:
Among the given options, option 'A' includes tobacco, cocoa, and rubber, all of which were domesticated in the New World and introduced into the Old World. These plants had a significant impact on the economies and cultures of the Old World, with tobacco and cocoa becoming major cash crops and rubber playing a crucial role in the industrial revolution. Therefore, option 'A' is the correct answer to the question.