The correct option being "2 only" highlights the role of westerlies in influencing weather patterns, particularly in the context of India. While the first statement is incorrectly framed (the westerlies exist between 30° N and 60° N as well as 30° S and 60° S), the second statement accurately describes how moist air masses from the westerly winds bring winter rains to North-Western India, such as in states like Punjab and Haryana, underlining the significance of westerlies in the Indian climatic context. This differentiation is crucial for understanding weather phenomena relevant in UPSC examinations, emphasizing the need for precision in geophysical concepts.