Read the outline map of four provinces in China and complete questions 11 ~ 12. 11. Xiao Chen bought a bottle of mineral water in the supermarket, and the trademark was marked "E Wei Shi Zheng Zi [27]" Among the four provinces and regions in the picture, Yunnan Province is located in the west. The provinces and regions in the picture are rich in energy. Yunnan Province is the province with the largest number of ethnic groups in China. Yunnan Province has a tropical area, and the area south of the Tropic of Cancer has direct sunlight twice a year. The option ABD is incorrectly described and does not meet the meaning of the question.

Therefore, it is chosen: C.