Distort filter. Blur filter is to blur the picture, Sharpen filter is to sharpen(make it more clear) the picture, and Texture is to change the texture of the picture...they're all very self-explanatory.
Distort filter is the filter that is used on images for deforming ,wrapping, altering ,reshaping effect ,arranging geometry etc .It can applied on images to modify their appearance by inducing 3 D (dimensional )effect and other effects.
Other options are incorrect because texture filter is used for improving the texture of image by resetting its appearance properties.
Sharpen filter is used for sharpening image.Blur filter is used for making any image blurry or to create blurred background .
