Which one among the following is India's first indigenously designed and built aircraft carrier warship?

Option 1 -> INS Vikramaditya is an aircraft carrier, but it was purchased from Russia (formerly Admiral Gorshkov) and refitted, not indigenously built.

Option 2 -> INS Jalashwa is an amphibious transport dock acquired from the United States (formerly USS Trenton), not an aircraft carrier.

Option 3 -> INS Airavat is an amphibious warfare vessel (landing ship tank) commissioned in 2009, not an aircraft carrier.

Option 4 -> INS Vikrant (IAC-1) is India's first indigenously designed and built aircraft carrier, constructed at Cochin Shipyard Limited.

Hence, INS Vikrant -> commissioned in September 2022, this represents a major milestone in India's naval capabilities and self-reliance in defense manufacturing under the 'Make in India' initiative -> correct