Final answer:
The claim that the Ontario legislature proclaimed the amendment to the Dental Hygiene Act, 1991 on September 1, 2007 is false and should be verified with official legislature or legal resources for accuracy.
Step-by-step explanation:
The statement "On September 1, 2007, the Ontario legislature proclaimed the amendment to the Dental Hygiene Act, 1991" is false. When looking at the historical context provided in the other exercises, it becomes evident that the question likely pertains to a specific event or legislative change within a particular field rather than historical events like the Proclamation of 1763 or the Constitutional Convention of 1787. For factual accuracy, specific legislative changes should be verified against the official records or legal databases to confirm the actual date and details of the amendment.