The correct answer is option D, that is, showing a wider view of a narrow, dangerous intersection.
A diverging mirror or a convex mirror refers to a curved mirror in which the reflective surface bulges towards the source of light. The convex mirrors reflect the light outwards, thus, they are not utilized to focus light. Such mirrors always produce a virtual image.
As a consequence, the images produced by these mirrors cannot be demonstrated on a screen, as the image is within the mirror. The image is smaller in comparison to the object, however, it gets bigger with the approach of the object towards the mirror.
Convex mirrors are recommended in vehicles as they provide an upright, though the diminished image. Also, they offer a broader field of view as they are curved outwards.