The microclimates of hill stations like Coorg are characterized by:

The correct answer is D) All of the above.

Hill stations are located at high altitudes, which means that the air is thinner and the temperature is cooler. The higher rainfall is due to the fact that the air is able to hold more moisture at higher altitudes. The increased humidity is also due to the higher rainfall.

Here is a more detailed explanation of each option:

• Cooler temperatures: Hill stations are located at high altitudes, which means that the air is thinner and the temperature is cooler. The average temperature in Coorg is 18 degrees Celsius, which is significantly cooler than the average temperature in the surrounding areas.
• Higher rainfall: The higher rainfall is due to the fact that the air is able to hold more moisture at higher altitudes. The average annual rainfall in Coorg is 2,500 mm, which is significantly higher than the average annual rainfall in the surrounding areas.
• Increased humidity: The increased humidity is also due to the higher rainfall. The average relative humidity in Coorg is 70%, which is significantly higher than the average relative humidity in the surrounding areas.

The microclimates of hill stations like Coorg are characterized by all of the above factors. These factors make hill stations popular tourist destinations, as they offer a refreshing change from the hot and humid weather of the plains.