The correct answer is C. Visual pollution includes trash, wooden planks, and signs that mess up our landscapes.
Step-by-step explanation
Visual contamination is the presence of visual elements that interrupt the aesthetics and overall perception of a landscape. It is usually found in large cities where there are a large number of billboards, lights, signs, antennas, cables, poles, advertisements, fenced areas, among other visual objects that disrupt the landscape in general. Therefore, it can be considered that the correct option is C. because all the objects mentioned aggressively break into the harmony of a landscape.