Answer : 2. "Be a part of the scheme"
Explanation :

Biodiversity, essential for human well-being, was first coined by Walter G. Rosen in 1985. It faces threats such as habitat loss, pollution and climate change, leading to extinction of species and degradation of ecosystems. The theme of the 2024 International Day for Biodiversity on May 22 highlights “Be part of the plan”, urging collective action to halt biodiversity loss and support the Kunming-Montreal global biodiversity framework.