The correct answer is D. All of these.
Mahendragarh, Rewari, and Yamunanagar are all districts in Haryana that have Tropical Dry Deciduous Forests. These forests are characterized by a dry climate with a long, hot summer and a short, cool winter. The trees in these forests are deciduous, meaning they lose their leaves in the winter. The most common trees in these forests are sal, teak, and khair.
Tropical Dry Deciduous Forests are an important part of the environment. They provide habitat for many different animals, including tigers, leopards, and elephants. They also help to regulate the climate and prevent soil erosion.
However, Tropical Dry Deciduous Forests are under threat from deforestation. This is due to a number of factors, including the expansion of agriculture, the construction of roads and dams, and the collection of firewood. Deforestation can have a number of negative consequences, including the loss of biodiversity, the disruption of the water cycle, and the increase in greenhouse gas emissions.
It is important to protect Tropical Dry Deciduous Forests. This can be done by creating protected areas, such as national parks and wildlife sanctuaries, and by promoting sustainable forest management practices.