stud grade dimensional lumber typically has a no wane or defects. b some obvious defects. c small tight…

Brief Explanations:

Stud - grade dimensional lumber is a common - use lumber in construction. It may have small tight knots, but not no wane or defects (it's not a high - grade finish lumber), not obvious defects (it's still usable for framing etc.), and not a smooth finished surface (it's not a finish - grade product).

Answer:

C. small tight knots, if any.