Multi-choice problem: Continue writing the next sentence in this paragraph:

A man is seen putting objects onto a wall and place a board along the wall. he

pick from the following.
 (a). moves between two objects while sitting and looking closer to the camera.
 (b). then swings and uses a long stick to turn a knob on the wall.
 (c). continues moving the objects on the wall and then nails them down with a nail gun and presents the shelves he's made.
 (d). uses an electric shaver to shaves the board along the wall.
(c).