The correct answer is (b) UNDP.
Usha Rao Monari of India was appointed as Under Secretary General and Associate Administrator of the United Nations Development Programme (UNDP) in 2021. She is the first Indian to hold this position.
The UNDP is a United Nations agency that helps countries achieve sustainable development. It provides technical assistance, policy advice, and financial support to governments and other partners. The UNDP works in a wide range of areas, including poverty reduction, climate change, and governance.
The other options are incorrect. UNEP is the United Nations Environment Programme, UNICEF is the United Nations Children’s Fund, and UNESCO is the United Nations Educational, Scientific and Cultural Organization.