The correct answer is Adilabad.
Adilabad district has the highest forest cover in Telangana, with 37.5% of its area under forest cover. The district is home to a number of important forests, including the Indravati Tiger Reserve, the Papikonda National Park, and the Kawal Wildlife Sanctuary. These forests are home to a variety of wildlife, including tigers, leopards, elephants, and deer.
Hyderabad, Warangal, and Nizamabad are all important cities in Telangana, but they do not have as much forest cover as Adilabad. Hyderabad has a forest cover of 12.5%, Warangal has a forest cover of 10%, and Nizamabad has a forest cover of 8%.
The forest cover in Telangana is important for a number of reasons. Forests provide a habitat for wildlife, they help to regulate the climate, and they provide a source of water and other resources for people. The government of Telangana is working to protect and conserve the forests in the state.