the first photo is of a natural element, hence that its nit man-made. the shape of the first photo is more geographic then the second photo.
the second photo is of a side walk, a man-made object. the shape of the second photo is of a square, a square that was man-made, had to be put in place.
Answer:
I'm not really picky with either.
I believe the answer is C, construction. Painting does not include any of the actions listed in the question, and neither does dancing. Manufacturing also cannot be the correct answer because the question does not suggest that you are building the paper from scratch.
