Which statement correctly defines forestry cruise?

• A. A forest survey used to estimate timber grade
• B. A method for measuring tree height with a clinometer
• C. A practice for counting wildlife in a forest
• D. It's a forest survey to estimate the quantity by products, size, quality, and other characteristics.

Answer: (D)

Forestry cruise is a forest inventory approach that estimates standing timber by systematically sampling trees, recording attributes such as species, diameter at breast height, height, merchantable height, and quality, and then projecting those measurements to the entire stand to determine volume, product mix, and value. This broader approach aligns with estimating quantity by products, size, quality, and other characteristics, which is why that statement captures what a cruise does. The other options focus narrowly on a single aspect or on a different kind of activity—timber grade alone, measuring height with a clinometer, or counting wildlife—none of which describe the full cruise process.