What happens next in this paragraph?

He puts a wooden slat in the door entrance. He picks the slat up. He cuts the slat. He lays the slat down again. he
Choose your answer from:
(A). removes the loose top half of the slat.;
(B). puts the board away.;
(C). uses another hand cut to cut a smaller piece.;
(D). drills it into place.;
(D).