The correct answer is option 2: Bangladesh.

In June 2020, a cyclone hit the coastline of Maharashtra and Gujarat. This cyclone was named `Nisarga` by Bangladesh. It is important to note that naming cyclones is a common practice carried out by different countries. The World Meteorological Organization (WMO) has a designated list of names that countries use to name cyclones.

Option 1: Maldives is not the correct answer because the cyclone was not named by the Maldives.

Option 3: Thailand is not the correct answer because the cyclone was not named by Thailand.

Option 4: Japan is not the correct answer because the cyclone was not named by Japan.

So, the correct answer is option 2: Bangladesh.