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Warm air is increasing to create low pressure zone; cool air is falling, creating a high pressure region. Air pressure and climate are rising warm air. Winds cause weather that moves across high-and low-pressure areas horizontally. The faster the wind moves, the higher the pressure difference between the pressure zones.
The capital of Meghalaya, Shillong lies on the eastern part of the state. Perched at an altitude of 1,520 meters (4,990 feet) above sea level, the city stretches for about 6 km on an elevated tract.
The answer to the item above is letter "C. surface". Surface waves are mechanical waves that propagate in the interface of differing media. These waves very usually have larger altitudes and longer wavelengths than the body waves.