Explanation: The Indus River is one of the major rivers in South Asia, flowing through the regions of Pakistan and India. It has several tributaries that are significant for the agricultural and water resources of the Punjab plains. The five main tributaries of the Indus River that flow through the Punjab plains are Jhelum, Chenab, Ravi, Sutlej, and Beas.
1. **Jhelum**: The Jhelum River originates in the state of Jammu and Kashmir and flows through the Jhelum Valley in Pakistan. It is a significant river for the region, providing water for irrigation and supporting the local economy.
2. **Chenab**: The Chenab River, also known as the "Chandrabhaga," originates in the Himalayas and flows through the Punjab plains. It is one of the most important rivers in the region, contributing significantly to the agricultural productivity of the area.
3. **Ravi**: The Ravi River originates in the Himalayas and flows through the Punjab plains. It is an important river for irrigation and water supply, supporting the agricultural activities in the region.
4. **Sutlej**: The Sutlej River, also known as the "Satluj," is the easternmost of the five rivers that form the Punjab. It originates in the Himalayas and flows through the Punjab plains, providing crucial water resources for the region.
5. **Beas**: The Beas River originates in the Himalayas and flows through the Punjab plains. It is an important river for irrigation and water supply, supporting the agricultural activities in the region.
These five rivers are collectively known as the "Punjab Rivers" and are crucial for the agricultural and water resources of the Punjab plains. They form a complex network of canals and irrigation systems that support the agricultural economy of the region. Understanding the geography and hydrology of these rivers is essential for comprehending the agricultural and economic landscape of Punjab.
The other options provided in the question are incorrect because they include rivers that are not tributaries of the Indus River or do not flow through the Punjab plains. For example, the Son is a tributary of the Ganges River, and the Nubra and Zanskar are tributaries of other rivers that do not flow through the Punjab plains. Therefore, the correct answer is (A) Sutlej and Beas, as these are the two missing tributaries of the Indus River that flow through the Punjab plains.