Consider the following information :

Waterfall	Region	River
1. Dhuandhar	Malwa	Narmada
2. Hundru	Chota Nagpur	Subarnarekha
3. Gersoppa	Western Ghats	Netravati

In how many of the above rows is the given information correctly matched?

The correct option is Only one.

Let us analyze each of the rows to verify the correctness of the matches:

1. Dhuandhar Waterfall:
- River: Narmada (Correct)
- Region: Malwa (Incorrect)
- Explanation: The Dhuandhar Falls are located on the Narmada River in Bhedaghat, Jabalpur district of Madhya Pradesh. This area lies in the Mahakoshal region of Madhya Pradesh, not the Malwa plateau region.

2. Hundru Waterfall:
- River: Subarnarekha (Correct)
- Region: Chota Nagpur (Correct)
- Explanation: The Hundru Falls are created by the Subarnarekha River in the Ranchi district of Jharkhand, which is situated on the Chota Nagpur Plateau. Therefore, this row is completely correct.

3. Gersoppa Waterfall:
- River: Netravati (Incorrect)
- Region: Western Ghats (Correct)
- Explanation: Gersoppa Falls (commonly known as Jog Falls) is located in the Shimoga district of Karnataka, which lies within the Western Ghats. However, the waterfall is formed by the Sharavati River, not the Netravati River.

Since only Row 2 (Hundru) is correctly matched, there is only one row in which the given information is correct.