Which statement is most correct while understanding Hooghly in the Ganga system?

Correct answer: It is linked with a distributary stream of the Ganga delta region

Hooghly belongs to the lower Ganga drainage system and is associated with the Ganga delta. In a delta, the river divides into distributary channels as it approaches the sea. Hooghly is one of the important channels connected with this deltaic network. A distributary branches away from the main river, so it should not be confused with a tributary, which joins the main river and adds water to it.

Option B is correct because it places Hooghly in the distributary system of the Ganga delta. It is not the main stream of the Indus, the source of the Yamuna, or a mountain branch of the Kosi. Those options connect it with unrelated rivers or incorrect river roles. The same river relationship appears in the earlier drainage question: Hooghly is understood through its deltaic connection with the Ganga. Therefore, option B is the only suitable choice.