The correct answer is: d) All of the above.
The Kaveri is the longest river in Tamil Nadu, but it is not the only important river in the state. The Vaigai, Palar, and Noyyal are also important rivers in Tamil Nadu.
The Vaigai is a river in the Indian state of Tamil Nadu. It is the second longest river in the state, after the Kaveri. The Vaigai originates in the Western Ghats and flows through the Madurai district before joining the Bay of Bengal. The Vaigai is an important source of water for irrigation and drinking water in Tamil Nadu.
The Palar is a river in the Indian state of Tamil Nadu. It is the third longest river in the state, after the Kaveri and the Vaigai. The Palar originates in the Western Ghats and flows through the Vellore, Tiruvannamalai, and Krishnagiri districts before joining the Bay of Bengal. The Palar is an important source of water for irrigation and drinking water in Tamil Nadu.
The Noyyal is a river in the Indian state of Tamil Nadu. It is the fourth longest river in the state, after the Kaveri, the Vaigai, and the Palar. The Noyyal originates in the Western Ghats and flows through the Coimbatore, Erode, and Namakkal districts before joining the Kaveri River. The Noyyal is an important source of water for irrigation and drinking water in Tamil Nadu.