Explanations:The question asks about the northern state of West Bengal. To understand this, it is essential to have a clear understanding of the geographical layout of the Indian states, particularly those in the northeastern region.
West Bengal is a state in eastern India, and it shares its borders with several other states and countries. The northern boundary of West Bengal is shared with the state of Sikkim. Sikkim is a small state located in the northeastern part of India, nestled in the Himalayan region. It is bordered by Nepal to the west, Bhutan to the east, and Tibet (China) to the north. Sikkim is known for its scenic beauty, rich biodiversity, and cultural heritage.
Geographically, Sikkim is positioned directly to the north of West Bengal. This makes Sikkim the northern state of West Bengal. The other options provided in the question do not fit this geographical criterion:
Goa is a state located on the western coast of India, far from West Bengal. It is not a northern state of West Bengal. Bihar, while it is a state that borders West Bengal, is located to the east, not the north. Assam, another northeastern state, is located to the northeast of West Bengal, not directly north.
Therefore, the correct answer is Sikkim, as it is the northern state of West Bengal. Understanding the geographical layout of Indian states is crucial for answering such questions accurately. It is important to remember the relative positions of states and their borders to avoid common misconceptions and errors.