Where you have not received a survey you may have been approached by a mutually known third party who have asked if you would be willing to take part in a focus group.
Os nad ydych wedi derbyn arolwg, mae’n bosibl bod trydydd parti sy’n gyfarwydd i chi wedi cysylltu i ofyn a fyddech yn fodlon cymryd rhan mewn grŵp ffocws.