All respondents are encouraged to answer Part A and any questions in Part B that they wish but there is no expectation that all respondents will have a view on every question.
Anogir pawb i ateb Rhan A ac unrhyw gwestiynau yn Rhan B yr ydynt yn dymuno eu hateb ond nid oes disgwyl y bydd gan bawb sy'n ymateb farn am bob cwestiwn.