Final answer:
The decisions of the Supreme Court of Canada are binding on all other courts in all Canadian jurisdictions, making it the ultimate authority on legal matters in Canada.
Step-by-step explanation:
The decisions of the Supreme Court of Canada are best described as binding on all other courts in all Canadian jurisdictions (option A). This means that the Supreme Court sets precedents that lower courts must follow. The Supreme Court of Canada, like its United States counterpart, is an appellate court, which means it primarily has appellate jurisdiction. This court hears appeals from lower courts and can issue rulings that have a significant influence on Canadian law and society. In some exceptional cases, the Supreme Court also has original jurisdiction. The decisions made by the Supreme Court of Canada serve as binding precedents that contribute to the country's legal framework, providing logic and consistency in the interpretation and application of the law.