Consider the following rivers:
1. Ganga
2. Brahmaputra
3. Godavari
4. Krishna
Which of these rivers build a common delta?

Ganga and Brahmaputra rivers build a common delta. Ganges Delta also known as Sunderbans Delta or Ganges Brahmaputra Delta in the Bengal region of the Indian subcontinent. This Green Delta is largest delta in the world and empties into the Bay of Bengal with combined Brahmaputra and the Ganges river.