This is a test of commonsense with single/multi-choices. Complete the next sentence:

A camera is shown walking all around a roof with a hand appearing every once in a while to touch the roof. the person

Choices:
[I] and dog continue to climb all along the roof and ends with a bowling ball being thrown through the air and released into the air.;
[II] when done holding the camera still while looking away.;
[III] then dips a stick into black ink and continues to touch around the roof while looking with the camera.;
[IV] is seen making marks on the side of the roof when more people are seen watching on the side.;
The answer is:
[III]