Which knot in illustration D030DG below should be used to secure a line to a spar when the pull is perpendicular to the spar?

Correct Answer: Option B — F

The Clove Hitch, represented by illustration F, is the standard knot for securing a line to a spar or post when the load is applied perpendicular to the axis of the spar. It is effective for temporary mooring or securing gear, provided the tension remains constant to prevent slipping.