Correct option is D
Now, let's analyze the options:
(a) Contractor – A contractor supervises construction, but doesn’t directly work on walls.
(b) Carpenter – A carpenter works with wood, not walls.
(c) Mason – A mason builds walls but doesn’t paint them.
(d) Painter – A painter uses walls to create artwork or apply paint, just like an artist uses a canvas.
Similarly, a Painter uses a Wall to paint.
Thus, the correct option is Painter (d).