Explanations:The Ganges River, also known as the Ganga, is one of the most important rivers in India. It originates from the Gangotri Glacier in the Himalayas and flows through the northern plains of India, eventually emptying into the Bay of Bengal, which is part of the Indian Ocean. The river is a significant water source for the most densely populated regions of the Indian subcontinent, including the states of Uttarakhand, Uttar Pradesh, Bihar, and West Bengal.
The Ganges River basin is one of the most densely populated regions in the world, with a population of over 400 million people. The river is not only a source of water for drinking, irrigation, and industrial use but also holds immense cultural and religious significance for Hindus. It is considered sacred and is a central part of many religious rituals and ceremonies.
Other rivers mentioned in the options do not meet the criteria specified in the question. The Indus River, while significant, flows through Pakistan and empties into the Arabian Sea, not the Indian Ocean. The Nile River is located in Africa and does not flow through India. The Tigris River is located in the Middle East and flows into the Persian Gulf, not the Indian Ocean.
Understanding the geographical distribution of major rivers and their drainage basins is crucial for comprehending the population distribution and water resource management in a region. The Ganges River plays a pivotal role in the socio-economic and cultural life of the Indian subcontinent, making it a key geographical feature to study.