Which option is a correct group of sources of evaporation?

Correct answer: समुद्र, झील और नदियां

Correct answer: A. Evaporation is the process in which liquid water changes into water vapour from a surface. It can occur from oceans, seas, lakes, rivers, ponds, wet soil, and other exposed water surfaces. Oceans are especially important because they cover a very large area, while lakes and rivers also provide open water from which molecules can escape into the atmosphere. Heat from the Sun and the movement of air generally support evaporation, although evaporation can occur at different rates under different conditions. Option A gives three genuine and common sources: oceans, lakes, and rivers. Option B is wrong because dry rocks are not the main source of evaporation; they may become wet, but the water—not the rock itself—evaporates. Option C is wrong for the same reason: metal is not a water source, although water on a metal surface can evaporate. Option D is too narrow and incorrectly treats snow or ice surfaces as ordinary liquid-water sources; ice generally changes by sublimation when it goes directly to vapour. Memory cue: evaporation needs exposed liquid water, especially oceans and other water bodies.