The correct choice is (d) <track>
The best I can explain: <area> element defines region on image. element is used to insert image in document. <track> element is used as a child of media elements <video> and <audio>. It lets you specify text tracklike to automatically handle subtitles. The tracks are formatted in WebVTT format like .vtt files. <map> with <area> element is used to define image.