Adyar and Vellar are the estuary associated with:

Correct option is A

Correct Answer: (a) East coast
Explanation:
→ Adyar (Chennai) and Vellar estuaries are located along India’s east coast (Bay of Bengal).
→ East coast estuaries are typically tide-dominated with wide deltas and lagoons.
Information Booster:
→ East coast estuaries support significant coastal fisheries and are influenced by monsoon-driven freshwater inputs.
Additional Information (Other Options):
(b),(c),(d): Not the correct coastal locations for these rivers.