Concept:Pulpwood is timber grown mainly for making paper and paper products.
Tree species used for this purpose must grow quickly and produce high-quality fibre.
Explanation:Gmelina is a fast-growing tree species commonly planted for pulpwood.
It adapts well to plantation conditions and supplies good raw material for paper production.
Cassia and albizia are not generally cultivated for pulpwood on a commercial scale.
Tectona, or teak, is more valued for strong, durable timber used in construction and furniture.
Among the options given, gmelina is therefore the correct choice for pulpwood plantations.
Answer:B. gmelina