The section of the Himalayas lying between the Tista (Teesta) and Dihang rivers in the eastern part of India is known as which of the following Himalayan ranges?

Introduction / Context:
The Himalayas are not a single uniform range but are divided into various regional sections based on geography and state boundaries. These sections often carry names that correspond to nearby regions, such as Punjab, Kumaon, or Assam Himalayas. Questions in Indian geography frequently ask about which names correspond to which river boundaries. This question focuses on the part of the Himalayas that lies between the Tista and Dihang rivers.

Given Data / Assumptions:

The question mentions the part of the Himalayas between the Tista (Teesta) and Dihang rivers.
We must choose the correct regional name for this section from the options given.
The options are Nepal Himalayas, Kashmir Himalayas, Assam Himalayas, and Jammu Himalayas.
We assume standard regional naming used in Indian geography textbooks.

Concept / Approach:
The Himalayan arc is commonly divided into segments, such as Punjab Himalayas, Kumaon Himalayas, Nepal Himalayas, and Assam Himalayas, based on river boundaries and nearby regions. The easternmost stretch of the Indian Himalayas, between the Tista and Dihang rivers, is generally referred to as the Assam Himalayas. Nepal Himalayas lie further west, mostly within Nepal. Kashmir and Jammu Himalayas are in the northwestern part of the arc. Therefore, the name that fits the Tista Dihang sector is Assam Himalayas.

Step-by-Step Solution:
Step 1: Identify the Tista and Dihang as rivers in the eastern Himalayan region. Step 2: Recall that the Himalayan segment between these rivers is commonly known as the Assam Himalayas. Step 3: Remember that Nepal Himalayas refer mainly to the central section of the mountain chain within and near Nepal, not as far east as Dihang. Step 4: Note that Kashmir and Jammu Himalayas are names used for the northwestern parts of the Himalayas, near Jammu and Kashmir region. Step 5: Conclude that the correct regional name for the Tista Dihang section is Assam Himalayas.

Verification / Alternative check:
To verify, think of how atlases label Himalayan sections. Many show the Assam Himalayas as the easternmost part within India, lying roughly between Sikkim or northern West Bengal and Arunachal Pradesh, bounded by the Tista and Dihang. Nepal Himalayas appear distinctly to the west, while Kashmir and Jammu Himalayas appear in the far northwest. This arrangement confirms that the Tista Dihang sector falls under the Assam Himalayas category.

Why Other Options Are Wrong:
Nepal Himalayas is wrong because that term is used for the central Himalayas located in and around Nepal, not the eastern sector bounded by the Dihang River. Kashmir Himalayas is wrong because it refers to the region around Jammu and Kashmir in the far northwest, far from the Tista and Dihang. Jammu Himalayas is similarly wrong for the same regional reason. None of these names match the eastern Himalayan segment described in the question.

Common Pitfalls:
A frequent mistake is to assume that any part of the Himalayas in the east must be covered by the term Nepal Himalayas, ignoring the separate naming of Assam Himalayas. Another pitfall is not paying attention to the river names and simply guessing based on which option looks familiar. To avoid this, students should memorise the standard river based divisions of the Himalayan arc and link each segment with its correct regional name.

Final Answer:
The part of the Himalayas between the Tista and Dihang rivers is called the Assam Himalayas.