Explanation

Analyzing the river basins encompassing these protected forest landscapes:

– 1. Nagarhole National Park (In Cauvery Basin): Situated in Kodagu and Mysuru districts of Karnataka, drained by the Kabini River, a major tributary of the Cauvery.
– 3. Sathyamangalam Tiger Reserve (In Cauvery Basin): Located in the Eastern and Western Ghats junction in Erode district of Tamil Nadu, traversed by the Moyar River, which flows into the Bhavani River (a primary Cauvery tributary).
– 4. Wayanad Wildlife Sanctuary (In Cauvery Basin): Located in Kerala, forming an integral part of the Nilgiri Biosphere Reserve; its streams feed into the Kabini River system.
– 2. Papikonda National Park (Not in Cauvery Basin): Located across East and West Godavari districts of Andhra Pradesh, lying entirely in the Godavari River basin.

Hence, protected areas 1, 3, and 4 are in the Cauvery basin — Option C.