Explanation:

- Option 1: 2000

- Exchange-traded funds (ETFs) were a relatively new concept during this time, gaining popularity globally.

- India was exploring the potential of ETFs but did not have any listed ETF in this year.

- Option 2: 2001

- This is the correct option. India's first ETF, the Nifty Benchmark Exchange-Traded Scheme (Nifty BeES), was listed in 2001.

- It was introduced by Benchmark Asset Management Company and tracked the Nifty 50 Index.

- Option 3: 2002

- By 2002, ETFs had gained traction globally, and India had already listed its first ETF in the previous year.

- Option 4: 2003

- ETFs in India were becoming more recognized, yet this was not the launch year for the country's first ETF.

- Option 5: 2004

- By 2004, several other ETFs had begun to launch in India, contributing to the diversification of investment options.

Correct Answer: Option 2: 2001