The branch of forestry that deals with the determination of dimensions is -

Correct option is D

· Forest Mensuration deals with measurement of trees, forests, and their products.
· It includes determining tree height, diameter, volume, growth, and biomass.
· This branch is essential for forest inventory, management, and planning.
· It helps in sustainable use of forest resources and scientific yield calculation.
· Data from forest mensuration is crucial for timber trade and carbon estimation.
Other options:
· (a) Agrobiology ❌ – study of plant and animal life in agriculture, not forestry measurement.
· (b) Agrostology ❌ – branch dealing with grasses, not dimensions of trees.
· (c) Silviculture ❌ – practice of growing and managing forests, but does not focus on measurement.