Answer : 3. "रुचिरा कंबोज "
Explanation :

India's first female permanent representative to the United Nations, Ruchira Kamboj, has retired after 35 years of service. During this time she served as the Indian envoy to Bhutan, South Africa and UNESCO. Kamboj was the all-India women topper of the 1987 Civil Services batch and the topper of the 1987 Foreign Services batch. She assumed office as India's Permanent Representative/Ambassador to the UN on August 2, 2022.