OPT: (I) uses a black tool to help her put the wall paper up.; (II) starts putting sheet after vast wall paper.; (III) wraps a wall paper pad around the existing wall paper and gathers the loose wall paper around it.; (IV) is showing a wall, and various watercolors.;Choose from options above and answer: What most naturally follows?

A woman is standing on a ladder hanging wall paper. she
Answer:
(I)