Vous avez cherché: preference (Gallois - Anglais)

no specific preference
always sign if possible

preference tracking (cy)
olrhain dewisiadau (cy)

tracking language preference
olrhain dewis iaith

storing the language preference
storio dewis iaith

language preference for differing modes
dewisiadau iaith ar gyfer moddau gwahanol

further, this preference information can be shared by other applications.
cewch ragor o wybodaeth am y swydd hon drwy gysylltu naill ai â:

any implicit assumption made relating to a users language preference should not last beyond the current session.
ni ddylai unrhyw dybiaeth ymhlyg ynghylch dewis iaith defnyddiwr bara y tu hwnt i’r sesiwn cyfredol.

“arolwg o ddewis ysgol”1 lle defnyddir “school choice” neu “school preference” yn saesneg, “holiadur dewis iaith addysg”, “addysg eich plentyn – arolwg o’ch barn” neu ddim teitl o gwbl.
“arolwg o ddewis ysgol”1 where "school choice" or "school preference" is used in english, "education language choice questionnaire", "your child's education - survey of your opinion" or no title at all.