Correct option is D
The longitudinal crack in wood that is usually normal to the annual rings is referred to as
checks.
Star shakes: Cracks that radiate from the center of a log outward.
Heart shakes: Cracks occurring in the central part of the log, often due to internal stresses.
Cup shakes: Cracks that occur across the rings, causing a cup-like shape in the wood surface.
Checks: Small, longitudinal cracks that appear normal to the annual rings and are common in drying wood.
