The correct answer is: C. Baulk
A baulk is a large piece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction. It is typically used in construction and shipbuilding.
A cant is a piece of sawn timber that is thicker than it is wide. It is typically used for roofing and flooring.
A deal is a piece of sawn timber that is wider than it is thick. It is typically used for making furniture and other wooden objects.
A strip is a thin piece of sawn timber. It is typically used for making moldings and other decorative items.