Which image editing technique allows you to discard unnecessary or unwanted portions of an image?

The image editing technique to be used in removing unwanted portions of an Image is called cropping

Explanation:

cropping is the removal of unwanted areas in a picture/image in other to change its general composition and its aspect ratio. cropping is a basic technique in photography it can be carried by everyone who can take a picture.

Image editing can be done on a more advance level using applications like "Photoshop" but the basic editing technique that allows you to discard unnecessary portions of an image easily is called cropping

An image depicts visual perception of an object or human usually through photography.

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