The correct answer is A. 2 years, 136 days.
Laxmikant Parsekar was the 14th Chief Minister of Goa from 19 March 2014 to 18 March 2017. He was elected as the MLA from Mandrem constituency in the 2012 Goa Legislative Assembly election. He was sworn in as the Chief Minister of Goa on 19 March 2014. He resigned as the Chief Minister on 18 March 2017. His tenure as the Chief Minister was for a period of 2 years, 136 days.
Option B is incorrect because Laxmikant Parsekar was the Chief Minister of Goa for a period of 2 years, 136 days, not 1 year, 156 days.
Option C is incorrect because Laxmikant Parsekar was the Chief Minister of Goa for a period of 2 years, 136 days, not 5 years, 126 days.
Option D is incorrect because Laxmikant Parsekar was the Chief Minister of Goa for a period of 2 years, 136 days.