The theme for the World Day to Combat Desertification and Drought in 2025 is "Restore the Land. Unlock the Opportunities.". This theme emphasizes the importance of restoring degraded lands to enhance the environment, improve livelihoods, and provide various opportunities for sustainable development.

Let's analyze why "Restore the Land. Unlock the Opportunities." is the correct answer and rule out the incorrect options:

• "Restoration. Land. Recovery.": This phrase emphasizes key concepts related to land restoration, but it is not the official theme for 2025.
• "Restore the Land. Unlock the Opportunities.": This is the correct theme for 2025. It reflects the focus on land restoration as a means to unlock sustainable opportunities.
• "United for Land. Our Legacy. Our Future.": This option makes a general statement about unity for land, but it is not the theme for 2025.
• "Her Land. Her Rights.": This was a theme from prior years, focusing on gender equality and women's rights in land management, not the theme for 2025.

Understanding these options helps emphasize the focus and campaign of the current theme, which is pivotal for global environmental and economic strategies when it comes to combating desertification and promoting land recovery efforts.