Commercially important timber trees found in Manipur include:

Teak
Sal
Pine
All of the above

The correct answer is: All of the above.

Teak, sal, and pine are all commercially important timber trees found in Manipur. Teak is a hardwood tree that is prized for its strength and durability. It is used in a variety of applications, including furniture, flooring, and boat building. Sal is another hardwood tree that is used in a variety of applications, including construction, furniture, and papermaking. Pine is a softwood tree that is used in a variety of applications, including construction, furniture, and papermaking.

Teak is a large, deciduous tree that is native to tropical and subtropical regions of Asia. It is a member of the legume family, Fabaceae. Teak trees can grow to be over 100 feet tall and have a trunk diameter of up to 6 feet. The leaves are compound, with 10-20 leaflets. The flowers are small and white, and the fruit is a pod. Teak wood is light brown to golden brown in color, and it has a distinctive, oily sheen. It is a very strong and durable wood, and it is resistant to decay and insect damage. Teak is used in a variety of applications, including furniture, flooring, boat building, and construction.

Sal is a large, deciduous tree that is native to tropical and subtropical regions of Asia. It is a member of the pea family, Fabaceae. Sal trees can grow to be over 100 feet tall and have a trunk diameter of up to 6 feet. The leaves are compound, with 10-20 leaflets. The flowers are small and white, and the fruit is a pod. Sal wood is light brown to dark brown in color, and it has a straight grain. It is a strong and durable wood, and it is resistant to decay and insect damage. Sal is used in a variety of applications, including construction, furniture, and papermaking.

Pine is a coniferous tree that is native to temperate and boreal regions of the Northern Hemisphere. It is a member of the pine family, Pinaceae. Pine trees can grow to be over 100 feet tall and have a trunk diameter of up to 6 feet. The leaves are needle-like, and the cones are woody. Pine wood is light brown to yellow in color, and it has a straight grain. It is a soft and lightweight wood, and it is easy to work with. Pine is used in a variety of applications, including construction, furniture, and papermaking.