Explanation: The Purvanchal Range is a significant geographical feature in the northeastern part of India. It is a series of hills and mountains that form part of the broader Himalayan system. The term "Purvanchal" translates to "Eastern Range" in Sanskrit, reflecting its location in the eastern part of the country.
The Purvanchal Range includes several important hill ranges, such as the Lushai, Mizo, and Naga hills. These hills are not only significant for their geographical presence but also for their cultural and ecological importance. The Lushai hills, primarily located in Mizoram, are known for their lush greenery and diverse flora and fauna. The Mizo hills, also in Mizoram, are closely associated with the Lushai hills and form a continuous range. The Naga hills, located in Nagaland, are known for their rugged terrain and are home to various indigenous tribes.
The Purvanchal Range plays a crucial role in the region's topography and climate. The hills act as a natural barrier, influencing the monsoon patterns and creating a unique microclimate in the northeastern states. The region is characterized by heavy rainfall, dense forests, and a rich biodiversity, which is partly due to the presence of these hills.
Understanding the Purvanchal Range and its components is essential for comprehending the geographical and ecological diversity of northeastern India. It is a key topic in Indian geography and is often tested in various competitive examinations, including the UPSC Civil Services and state PSC exams. The range's significance extends beyond its physical attributes, as it is also a cultural and historical landmark for the indigenous communities residing in the region.
In summary, the Purvanchal Range includes the Lushai, Mizo, and Naga hills, making option D the correct and comprehensive answer. This range is a vital part of the northeastern landscape, contributing to the region's unique geographical and cultural identity.