Value and contrast are both seen in this image. A proper definition of contrast for this image would be -differences in the light and dark values .
The correct option is 4.
The difference in brightness or colour that helps you differentiate one thing from another is called contrast. Contrast in the actual world is determined by the contrast between one object and other things in the same field of vision in terms of colour and brightness.
Colors that contrast one another are different from one another. Depending on where they are on the colour wheel, contrast levels range from high to low.
Black and white or light and dark are extremely ageless colours, and their contrast is the biggest contrast there is.
In design and art, the term "value" refers to the brightness and darkness of a hue. The difference between bright and dark values, or contrast, is what allows us to perceive anything. Chroma (colour) comes into play after value. Edges and objects are harder to see when there is less contrast between light and dark.
To learn more about contrast, refer
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