Consider the following rivers:

1. Vamsadhara
2. Indravati
3. Pranahita
4. Pennar

Which of the above are tributaries of Godavari?

The correct option is 2 and 3 only.

To understand why this is correct, let us analyze each of the given rivers and their geographical classification:
1. Vamsadhara: The Vamsadhara River is an independent east-flowing river that originates in the Kalahandi district of Odisha, flows through Andhra Pradesh, and drains directly into the Bay of Bengal. It is not a tributary of the Godavari River.
2. Indravati: The Indravati River is a major left-bank tributary of the Godavari River. It originates in the Eastern Ghats in the Kalahandi district of Odisha and flows westward through the Bastar district of Chhattisgarh before joining the Godavari River at the tri-junction boundary of Maharashtra, Chhattisgarh, and Telangana.
3. Pranahita: The Pranahita River is the largest tributary of the Godavari River, draining about 34% of its basin. It is formed by the confluence of the Wardha, Wainganga, and Penganga rivers, and it flows along the border of Maharashtra and Telangana before emptying into the Godavari River at Kaleshwaram.
4. Pennar: The Pennar (Penna) River is an independent river basin located in southern India. It originates in the Nandi Hills of Karnataka, flows through Andhra Pradesh, and empties directly into the Bay of Bengal. It is not a tributary of the Godavari River.

Therefore, only Indravati (2) and Pranahita (3) are tributaries of the Godavari River, making 2 and 3 only the correct choice.