These four issues remained at the top of the table at time point C, but destruction of nature, wildlife and biodiversity had overtaken COVID-19 as the issue of greatest concern.
Arhosodd y pedwar mater hyn ar frig y tabl yng nghyfnod amser C, ond roedd difa natur, bywyd gwyllt a bioamrywiaeth wedi pasio COVID-19 fel y mater o'r pryder mwyaf.