The correct option is C North-eastern valley
Dehradun is the capital city of Uttarakhand in the northern part of India, located in the Garhwal region. It has tropical deciduous forests. Climate is warm with alternate wet and dry periods. Rainfall is 90 to 160 cm. Vegetation includes broad leaved trees, which shed their leaves during dry season e.g., Butea, Bombax, Shorea, Dalbergia etc.