Explanation: To understand the geographical context of the question, it is essential to know the location of each state in relation to New Delhi, the capital of India. New Delhi is situated in the northern part of India, in the National Capital Territory of Delhi.
Himachal Pradesh is a state in northern India, located in the Himalayan region. It is bordered by the states of Punjab, Haryana, and Uttarakhand, and it shares a border with the Union Territory of Jammu and Kashmir. Given its location, Himachal Pradesh is relatively close to New Delhi, making it the correct answer to the question.
Tripura, on the other hand, is located in the northeastern part of India, far from New Delhi. It is separated by several states and a significant distance, making it an incorrect choice for the state closest to New Delhi. Similarly, Tamil Nadu and Kerala are located in the southern part of India and are far from New Delhi. The distance between these southern states and New Delhi is considerable, making them incorrect choices.
In summary, the geographical location of Himachal Pradesh in the northern part of India, close to the Himalayas and sharing a border with Punjab, which is directly adjacent to New Delhi, makes it the state closest to New Delhi among the given options. This understanding of the relative distances and locations of Indian states is crucial for answering questions related to geographical proximity.