What do the objectives highlighted in grey signify?

The objectives highlighted in grey signify Ontario-specific objectives. This means that they are principles or goals that have been tailored specifically for the context of Ontario’s building code regulations, reflecting the unique environmental, safety, and structural needs of the province. Understanding these objectives is crucial for compliance with local building standards and ensuring that construction projects address specific challenges and requirements that may not be relevant elsewhere.

The other choices do not accurately represent the significance of these grey-highlighted objectives. Outdated provisions refer to elements that are no longer valid and would not be highlighted in such a manner to suggest current relevance. Potential risks, on the other hand, would typically require a different form of notation or warning, rather than simply using a highlight. Finally, alternative objectives would imply options or variations, which does not align with the designation of the grey-highlighted items as objectives defined by the context of Ontario.