Hampi is located in the Krishna Tungabhadra basin, which formed the nucleus of the Vijayanagara Empire founded in 1336.The magnificent ruins at hampi reveal a well fortified city.

Introduction:
Hampi is a UNESCO World Heritage site located in the state of Karnataka, India. It is known for its rich historical and architectural significance, with numerous ancient temples, palaces, and other structures. The city of Hampi was the capital of the Vijayanagara Empire during the 14th to 16th centuries. In order to understand why Hampi is located in the Krishna-Tungabhadra basin, let's explore the geography of the region.

Geography of Hampi:
Hampi is situated on the southern bank of the Tungabhadra River, which is a major tributary of the Krishna River. The Krishna River is one of the longest rivers in India, flowing through several states before emptying into the Bay of Bengal. The Tungabhadra River, on the other hand, originates in the Western Ghats and joins the Krishna River near Hampi.

Importance of the Krishna-Tungabhadra Basin:
The Krishna-Tungabhadra basin plays a crucial role in the geography and ecology of the region. Here are some key reasons for its importance:

1. Water Resources: The Krishna-Tungabhadra basin is rich in water resources, with both rivers providing a significant water supply for irrigation, drinking water, and other purposes. The Tungabhadra Dam, located near Hampi, further enhances the water availability in the region.

2. Fertile Soil: The basin is characterized by fertile soil, making it suitable for agriculture. The availability of water from the Krishna and Tungabhadra rivers supports the cultivation of crops such as rice, sugarcane, cotton, and more.

3. Economic Significance: The Krishna-Tungabhadra basin is an important agricultural region, contributing to the economy of the surrounding areas. The cultivation of various crops in the basin supports the livelihoods of local communities.

Connection to Hampi:
Given the significance of the Krishna-Tungabhadra basin in terms of water resources and fertility, it is no surprise that the ancient city of Hampi was established in this region. The availability of water from the Tungabhadra River would have been crucial for the sustenance of the city and its inhabitants. Additionally, the fertile soil in the basin would have supported agriculture, providing a stable food supply for the Vijayanagara Empire.

Therefore, the correct answer is option B - Hampi is located in the Krishna-Tungabhadra basin due to the geographical advantages it offers in terms of water resources and fertile soil.