1. An apparatus comprising: an acquisition unit configured to acquire a plurality of pieces of image data based on image information related to the image data; a selection unit configured to select an image group from a plurality of image groups, based on the image information; and a display control unit configured to cause a display to display images such that images based on the plurality of pieces of image data acquired by the acquisition unit are displayed on the display, wherein the display control unit causes the display to display a plurality of images such that images based on the plurality of pieces of image data acquired by the acquisition unit are arranged in a predetermined order, and wherein in a case where the image group is selected by the selection unit, the display control unit causes the display to display images such that images are displayed in a displaying state in which at least one image included in the image group selected by the selection unit is displayed in a manner distinguishable from at least one image that is not included in the image group selected by the selection unit.