Those making the decisions, those scrutinising them and those affected by them should have appropriate information on which to base their decisions.
Dylai gwybodaeth briodol fod ar gael i'r rhai sy’n gwneud y penderfyniadau, y rhai sy’n craffu arnynt a’r rhai a effeithir ganddynt, er mwyn iddynt allu seilio eu penderfyniadau arni.