Explanations:The question asks about a major river that starts in the Himalayas and flows out into the Arabian Sea. To understand this, we need to consider the geographical locations and termini of the major rivers in the Indian subcontinent.
The Himalayas are a significant mountain range that serves as the origin point for many major rivers in South Asia. Rivers originating in the Himalayas are crucial for the region's agriculture, economy, and culture. The question specifically asks for a river that flows into the Arabian Sea, which is located to the west of the Indian subcontinent.
The Indus River is one of the major rivers in South Asia. It originates in the Himalayas in the Tibet Autonomous Region of China and flows through the regions of Ladakh and Jammu and Kashmir in India, and then through Pakistan, before emptying into the Arabian Sea. The Indus River is significant not only for its geographical flow but also for its historical and cultural importance, as it was the site of the ancient Indus Valley Civilization.
The other rivers mentioned in the options have different termini. The Ganges, for example, originates in the Himalayas but flows into the Bay of Bengal, which is located to the east of the Indian subcontinent. The Brahmaputra also starts in the Himalayas but flows into the Bay of Bengal. The Euphrates, on the other hand, is a river located in the Middle East and flows into the Persian Gulf, which is not part of the Indian subcontinent.
Therefore, the Indus River is the correct answer as it is the only river among the options that starts in the Himalayas and flows into the Arabian Sea.