Answer : 3. "Uttar Pradesh"
Explanation :

Uttar Pradesh government has launched ‘Mitra Van’ under Vriksharopan Jan Abhiyan-2024, aiming to plant 35 crore saplings along the Uttar Pradesh-Nepal border. Coordinated by the Forest Department, the campaign will involve 35 forest divisions and neighboring state dignitaries. Key districts include Saharanpur, Lakhimpur Kheri, and Maharajganj. Additional initiatives like ‘Shakti Van’ and ‘Yuva Van’ will also be established. The campaign starts on July 20.