Explanation:

- The Skill India Mission is a major initiative by the Government of India to enhance the skills of the Indian workforce.

- Option 1, 2010: This year predates the official launch and doesn't match the timeline for the Skill India Mission.

- Option 2, 2015: The Skill India Mission, including its flagship schemes like the Pradhan Mantri Kaushal Vikas Yojana (PMKVY), was officially launched on July 15, 2015.

- Option 3, 2008: Also too early in the timeline for the Skill India Mission.

- Option 4, 2019: This year is too late. By then, the Skill India Mission was already well underway.