The correct answer is option 2 - Satluj. The Bhakra Nangal Project is a multipurpose irrigation and hydroelectric power project located on the Satluj River in the northern Indian state of Himachal Pradesh. The Satluj River is one of the major tributaries of the Indus River and it flows through multiple states before eventually merging with the Indus River in Pakistan.
The Bhakra Nangal Project diverts water from the Satluj River into a network of canals, which are used for irrigation purposes in the surrounding regions. The water from the canals is used for agricultural activities, providing a significant boost to the agricultural productivity of the region.
The project also generates hydroelectric power by harnessing the water flow of the Satluj River. It has multiple power stations that generate electricity, contributing to the overall energy needs of the region.
Therefore, it can be concluded that the canal system of the Bhakra Nangal Project is primarily fed by the Satluj River, making option 2 the correct answer.