Correct Answer: (d) 2015-16
Solution:According to the Chhattisgarh Economic Survey 2016-17, production of coal in the year 2012-13 is 1,17830 thousand LOC tonnes, 1,27,095 thousand tonnes in the year 2013-14, 1,34,800 thousand tonnes in the year 2014-15 and 1,30,500 thousand tonnes in the year 2015-16. Therefore, it is clear that the production of coal has declined in the year 2015- 16 as compared to previous year. Production of coal in Chhattisgarh in 2017-18 is 1425.10 lakh tonnes. According to Chhattisgarh Economic Survey 2023-24, production of coal 142514 thousand in the year 2017-18, 161893 thousand tonnes in the year 2018-19, 157064 thousand tonnes in the year 201-20, 158409 thousand tonnes in the year 2020-21, 154-120 thousand tonnes in the year 2021-22 and 184630 thousand tonnes in the years 2022-23.