Let's match the events/organizations with the associated names: (I) Appiko Movement: This environmental movement was led by Pandurang Hegde. While Appu and Mamtha (ii) might not be the primary leaders, option D pairs (I) with (ii). Let's check other pairings. (II) Narmada Bachao Andolan: This movement protesting against the Sardar Sarovar Dam is famously associated with Medha Patkar (iv). So, (II)-(iv). (III) People for Animals: This animal rights organization was founded by Maneka Gandhi (i). So, (III)-(i). (IV) Resurrection of Kali Bein Rivulet: This ecological restoration project in Punjab was led by Baba Balbir Singh Seechewal (iii). So, (IV)-(iii). Based on the confirmed matches (II)-(iv), (III)-(i), and (IV)-(iii), option D is the only one that fits all three. Therefore, (I) is matched with (ii) Appu and Mamtha, despite Pandurang Hegde being the primary leader of Appiko Movement. This pairing might refer to symbolic figures or a specific aspect not commonly known, or it could be a less precise pairing within the options provided. However, the other three matches are strong and uniquely fit option D.