Explanation:

 1.  Braided Rivers exhibit numerous channels that split off and rejoin each other to give a braided appearance. They typically carry fairly coarse-grained sediment down a fairly steep gradient.  Ganga river exhibit this characterstic

2.  Second statement is correct.

3.  Third statement is incorrect.

4.  Ganga along with Brahamputra and other rivers deposit nearly 1000 million tons of sediment per year into the Bay of Bengal.