Your participation is voluntary and if you do not wish to take part you are not obliged to complete the survey, and if you have started it, you can stop at any time.
Mae cymryd rhan yn fater cwbl wirfoddol, ac os nad ydych chi am gymryd rhan nid oes rhaid i chi gwblhau'r arolwg, neu os ydych chi wedi ei ddechrau, gallwch stopio ar unrhyw adeg.