The correct answer is C. 689 thousand hectare.
The total area covered by horticulture crops in Chhattisgarh in the year 2012-13 was 689 thousand hectare. This is an increase of 10% from the previous year. The main horticulture crops grown in Chhattisgarh are fruits, vegetables, and flowers. The state has a favorable climate for the cultivation of these crops. The government of Chhattisgarh has been promoting the development of horticulture in the state. It has provided subsidies for the cultivation of horticulture crops and has also set up a number of horticulture development centers. These centers provide training to farmers on the latest techniques of horticulture cultivation. The government has also set up a number of cold storage facilities to help farmers store their produce. These measures have helped to increase the area under horticulture cultivation in Chhattisgarh.
Option A is incorrect. The total area covered by horticulture crops in Chhattisgarh in the year 2012-13 was 689 thousand hectare, not 199 thousand hectare.
Option B is incorrect. The total area covered by horticulture crops in Chhattisgarh in the year 2012-13 was 689 thousand hectare, not 377 thousand hectare.
Option D is incorrect. The total area covered by horticulture crops in Chhattisgarh in the year 2012-13 was 689 thousand hectare, not 855 thousand hectare.
Option E is incorrect. The total area covered by horticulture crops in Chhattisgarh in the year 2012-13 was 689 thousand hectare, not 585 thousand hectare.