The correct answer is Sal (Shorea robusta). Sal is a large deciduous tree that is native to the Indian subcontinent. It is the state tree of Chhattisgarh and Jharkhand. Sal is an important tree for the environment and the economy. It is used for timber, fuelwood, and fodder. It is also a popular tree for planting in parks and gardens.
Teak (Tectona grandis) is a large deciduous tree that is native to Southeast Asia. It is a popular tree for timber and furniture. Teak is not the state tree of Chhattisgarh.
Bamboo (Bambusoideae) is a group of grass species that are native to tropical and subtropical regions. Bamboo is a fast-growing plant that is used for a variety of purposes, including construction, furniture, and food. Bamboo is not the state tree of Chhattisgarh.
Mahua (Madhuca longifolia) is a large deciduous tree that is native to the Indian subcontinent. It is a popular tree for its flowers, which are used to make a sweet drink and oil. Mahua is not the state tree of Chhattisgarh.