Explanation:

• Option A Rotation of earth does cause wind movements; change of day and night; distribution of heat on earth etc. However, it does not explain several other phenomena such as seasons on earth; extreme heat and cold in Poles etc.
• Option B Sun’s energy causes all these, and is ultimately responsible for life and activity on earth, which also subsumes weather phenomena.
• Option C Earth’s hydrological cycle is only partly responsible for the weather. For e.g. rainfall pattern, movements of ocean water etc.
• Option D Primordial heat inside the earth manifests itself in form of moving molten magma inside the earth. This however is responsible for tectonic and geo-morphological processes, not weather phenomenon.
• Learning: sun is the primary source of energy that causes changes in the weather. Energy absorbed and reflected by the earth’s surface, oceans and the atmosphere play important roles in determining the weather at any place. Heat from Sun causes changes in temperature; pressure; evaporation; biological activity etc. All these in turn determine the weather at a place.