The correct answer is (d).
India receives an average annual rainfall of about 1,170 mm. However, this rainfall is not evenly distributed throughout the country. Most of the rainfall occurs during the monsoon season, which runs from June to September. This means that there is a lot of rain in a short period of time, which can lead to flooding and other problems.
In addition, the rain water that does not evaporate or run off quickly is often lost due to poor water management practices. This means that a lot of the rain water that falls in India is not used effectively.
As a result of these factors, India is still regarded as a thirsty land, despite its abundant rainfall.
Here is a brief explanation of each option:
(a) Rapid run off of water: This is a major problem in India. The land in many parts of the country is not well-suited for absorbing water, so when it rains, the water quickly runs off the surface and into rivers and streams. This can lead to flooding and other problems.
(b) Quick evaporation of rain water: The sun is very strong in India, so the rain water that does not run off quickly often evaporates. This means that a lot of the rain water that falls in India is not available for use.
(c) Concentration of rainfall during a few months only: As mentioned above, most of the rainfall in India occurs during the monsoon season. This means that there is a lot of rain in a short period of time, which can lead to flooding and other problems. In addition, it means that there is not enough rain water to meet the needs of the population during the rest of the year.
(d) All of the above: All of the factors mentioned above contribute to the fact that India is still regarded as a thirsty land, despite its abundant rainfall.