The correct answer is option 1, which states that statements 1 and 4 are correct.

Let`s analyze each statement to understand why:

Statement 1: "The South-West Monsoon originates in India due to low pressure in the Punjab plain." This statement is correct. The monsoon winds are driven by the pressure difference between the Indian Ocean (which has high pressure) and the Indian subcontinent (which has low pressure). This low-pressure system in the Punjab plain acts as a catalyst in attracting the monsoon winds.

Statement 2: "The South-West Monsoon originates in India due to high pressure in areas South of India." This statement is incorrect. The monsoon winds are driven by the pressure difference between the Indian Ocean and the Indian subcontinent, not by high pressure in areas south of India.

Statement 3: "The South-West Monsoon originates in India due to the equatorial low being filled up by descending air current." This statement is incorrect. The South-West Monsoon is not directly caused by the equatorial low; it is primarily driven by the pressure difference between the ocean and landmass.

Statement 4: "The South-West Monsoon originates in India due to the Himalayas." This statement is correct. The Himalayas act as a