The correct options are
A The dams are constructed on the seasonal rivers.
D Valuable fishes like whales and sharks visit the coasts between Okha and Veraval during the summer.
Rivers, lakes, wells provide water for agriculture and for drinking water. The dams are constructed on the perennial rivers and water is supplied to the areas where there is scarcity through canals and pipelines.Valuable fishes like whales and sharks visit the coasts between Okha and Veraval during the winter.