A diverging lens, also known as a concave lens, is a lens that is thinnest at its center and thicker towards its edges. This type of lens always forms an image that is virtual, upright, and diminished.
A virtual image is an image that cannot be projected onto a screen and is located behind the lens. An upright image is one that appears in the same orientation as the object being viewed. A diminished image is one that is smaller than the object being viewed.
Therefore, the correct answer is "diminished, virtual and erect".