Shape and colour as a system

Round commands, triangles warn, yellow means temporary, red border prohibits.

Sign taxonomy

If we take a look at these signs, these signs are going to be in the shape of a triangle, right? And they're going to have a red border. So, that means that these signs are going to be warning signs, right? Because warning signs are triangular in shape. And between these two signs, a white background is going to mean a permanent sign, and a yellow background is going to mean it's going to be a temporary sign. So, in terms of warning signs, all they're going to do is just alert any driver to potential dangers ahead or changes in the conditions of the road ahead. Therefore, option C would be cor