The correct answer is (d) Bharathappuzha Basin.
The Bharathappuzha Basin is the largest river basin in Kerala, India. It is also known as the “Rice Bowl of Kerala” because it is the main source of irrigation for the state’s rice fields. The basin covers an area of about 20,000 square kilometers and is home to a population of over 10 million people.
The Bharathappuzha River is the main river in the basin. It originates in the Western Ghats and flows through the Palakkad Gap before emptying into the Arabian Sea. The river is about 200 kilometers long and has a drainage basin of about 10,000 square kilometers.
The Bharathappuzha Basin is a major agricultural region. Rice is the main crop, but other crops such as sugarcane, tapioca, and coconut are also grown. The basin is also home to a number of industries, including textiles, paper, and chemicals.
The Bharathappuzha Basin is a very important part of Kerala’s economy and environment. The river provides water for irrigation, drinking, and industrial use. The basin is also home to a number of important wildlife habitats, including the Periyar Tiger Reserve and the Eravikulam National Park.
The Bharathappuzha Basin is facing a number of challenges, including pollution, deforestation, and climate change. These challenges are threatening the basin’s environment and economy. However, there are a number of initiatives underway to protect the basin and its resources.