The correct answer is (b), Ukraine.
Operation Ajay was launched by India on February 24, 2022, to bring back Indian citizens from Ukraine after the Russian invasion. The operation was named after Ajay, a Hindu god of victory.
The first flight of Operation Ajay, carrying 219 Indian nationals, landed in Mumbai on February 26, 2022. A total of 18 flights were operated under Operation Ajay, bringing back over 18,000 Indian nationals from Ukraine.
The operation was a success, and all Indian nationals who wanted to leave Ukraine were able to do so. The Indian government has been praised for its swift and efficient response to the crisis.
The other options are incorrect because they are not countries that India has launched an evacuation operation for. Sudan is a country in Africa, Israel is a country in the Middle East, and Russia is a country in Europe.