Among the climatic regions of India shown in the map, option 2 represents the `Humid subtropical` region.

To further understand why option 2 is the correct answer, let`s dissect each option:

Option 1: This option corresponds to region 1, which is marked as a desert region. The characteristics of a desert region include low precipitation and high temperatures, which do not align with the characteristics of a humid subtropical region.

Option 2: This option corresponds to region 2, which is marked as a coastal region. The characteristics of a humid subtropical region include high precipitation and warm temperatures. Coastal regions in India, such as the western coast, experience these characteristics, making option 2 the correct answer.

Option 3: This option corresponds to region 3, which is marked as a mountainous region. Mountainous regions in India, such as the Himalayas, have different climatic conditions compared to humid subtropical regions. They typically have colder temperatures and heavy snowfall, which does not match the characteristics of a humid subtropical region.

Option 4: This option corresponds to region 4, which is marked as a semi-arid region. Semi-arid regions, like desert regions, usually have low precipitation and high temperatures,