Which one of the following is an artificial lake?

The correct answer is Kodaikanal (Tamil Nadu).

Step-by-Step Explanation:

1. Understanding Artificial Lakes:
An artificial lake (or man-made lake) is created by human activities, such as building a dam across a river or stream, excavating soil, or constructing bunds to store water for irrigation, domestic supply, or recreational purposes.

2. Analyzing the Options:

• Kodaikanal Lake (Tamil Nadu): This is a man-made (artificial) lake located in the town of Kodaikanal in Tamil Nadu. It was created in 1863 by Sir Vere Henry Levinge, the then Collector of Madurai, by damming the waters of three streams that flowed through the region.

• Kolleru Lake (Andhra Pradesh): This is one of the largest freshwater natural lakes in India, located between the Krishna and Godavari deltas.

• Nainital Lake (Uttarakhand): This is a natural freshwater lake of tectonic origin, situated in the town of Nainital in Uttarakhand.

• Renuka Lake (Himachal Pradesh): This is the largest natural lake in Himachal Pradesh, named after the goddess Renuka.

3. Conclusion:
Among the given options, only Kodaikanal Lake is an artificial (man-made) lake.