The correct answer is: Teak.
Teak is a valuable timber species in Mizoram because it is a strong and durable wood that is resistant to decay. It is used to make furniture, flooring, and other products that require a long-lasting material.
Sal is another valuable timber species in Mizoram, but it is not as strong or durable as teak. It is used to make furniture, flooring, and other products that do not require as much strength or durability.
Pine is not a valuable timber species in Mizoram. It is a softwood that is not as strong or durable as teak or sal. It is used to make paper, furniture, and other products that do not require a strong or durable material.
Bamboo is not a timber species. It is a grass that is used to make a variety of products, including furniture, flooring, and paper. It is a strong and durable material, but it is not as strong or durable as teak or sal.