Introduction:
Vegetables like tomatoes, potatoes, and chillies are native to the New World, which refers to the American continents. These vegetables were not originally found in India or the Old World. They were introduced to India through trade and exploration.

Explanation:
The correct answer is option 'C' - New World. Here is an explanation of why this option is correct:

The Old World:
The Old World refers to the continents of Africa, Europe, and Asia. These continents have a long history of agricultural practices and have cultivated various crops for thousands of years. However, vegetables like tomatoes, potatoes, and chillies were not part of the Old World's native flora.

The New World:
The New World refers to the American continents, including North, Central, and South America. These continents were home to a wide variety of plant species that were not found in other parts of the world. Tomatoes, potatoes, and chillies are examples of crops that were originally cultivated in the New World.

Introduction to India:
The introduction of these New World vegetables to India can be attributed to historical events, particularly the era of European exploration and colonization. During the 15th and 16th centuries, European explorers like Christopher Columbus, Vasco da Gama, and others embarked on voyages to discover new trade routes and expand their empires.

Trade and Exploration:
As these European powers made contact with the New World, they encountered a wealth of new plant species that were unknown in the Old World. They brought back these exotic crops to Europe, where they quickly became popular. From Europe, these vegetables found their way to other parts of the world through trade routes.

India's Connection:
India, being a major hub of trade and cultural exchange, was a destination for these new crops. The Portuguese were one of the first European powers to establish trade routes with India, followed by the Dutch, British, and others. Through these trade networks, New World vegetables like tomatoes, potatoes, and chillies were introduced to India.

Impact on Indian Cuisine:
The introduction of these New World vegetables had a significant impact on Indian cuisine. Tomatoes, for example, became an integral ingredient in many Indian dishes, such as curries and sauces. Potatoes were incorporated into various regional cuisines, including dishes like aloo gobi (potato and cauliflower) or aloo paratha (potato-stuffed bread). Chillies, with their spicy flavor, became an essential component in Indian spices and condiments.

Conclusion:
In conclusion, vegetables like tomatoes, potatoes, and chillies reached India from the New World. This was made possible through trade and exploration during the era of European colonization. These vegetables have since become an integral part of Indian cuisine, adding unique flavors and diversity to the culinary traditions of the country.