The correct answer is A. 2003.
The Jharkhand State Electricity Board (JSEB) was constituted on 15 November 2003, after the bifurcation of the Bihar State Electricity Board (BSEB) into two separate boards, one for each of the newly created states of Jharkhand and Bihar. The JSEB is responsible for the generation, transmission, and distribution of electricity in the state of Jharkhand.
Option B is incorrect because the JSEB was not constituted in 2002. The JSEB was constituted on 15 November 2003, after the bifurcation of the Bihar State Electricity Board (BSEB) into two separate boards, one for each of the newly created states of Jharkhand and Bihar.
Option C is incorrect because the JSEB was not constituted in 2012. The JSEB was constituted on 15 November 2003, after the bifurcation of the Bihar State Electricity Board (BSEB) into two separate boards, one for each of the newly created states of Jharkhand and Bihar.
Option D is incorrect because the JSEB was not constituted in 2010. The JSEB was constituted on 15 November 2003, after the bifurcation of the Bihar State Electricity Board (BSEB) into two separate boards, one for each of the newly created states of Jharkhand and Bihar.