Correct Answer: (b) 1 and 3
Solution:Sabarmati, Mahi, Bharathapuzha, Periyar, kalinadi, Narmada, and Tapi are west flowing rivers while Mahanadi, Godavari, Krishna, Kaveri, Palar and Pennar are east flowing rivers. Generally, west flowing rivers empty into the Arabian Sea and east flowing rivers empty into the Bay of Bengal.