The correct answer is option 2, Rajendra Singh. He is the first person outside the Indian Navy to become the Director General of Indian Coast Guard.

Option 1, Krishna Chaudhary, is not the correct answer.

Option 3, Prabhakaran Paleri, is also not the correct answer.

Option 4, H.C.S. Bisht, is not the correct answer.

Rajendra Singh`s appointment as the Director General of Indian Coast Guard marked a significant milestone as he was the first person from outside the Indian Navy to hold this position. This decision reflects the growing importance and recognition of the Indian Coast Guard as a capable and independent maritime force. Rajendra Singh`s experience and expertise in coastal security and maritime enforcement played a key role in his appointment. This step also highlights the efforts to diversify the leadership positions within the Indian Coast Guard and ensure a more inclusive and balanced approach to maritime operations.