Final answer:
The differences between the 2012 and 2017 Canadian Survey of Disability likely include methodology, question adjustments, definitions of disability, or changes in surveyed populations.
Step-by-step explanation:
The Canadian Survey of Disability (CSD) has seen changes between the 2012 and 2017 iterations. These surveys aim to provide data on Canadians who report having a disability and the impact of these disabilities on their daily lives. One main difference could be in the methodology or in the specific questions asked, adjustments in the definitions of disability, or changes in the population being surveyed. The information from these surveys is vital for making decisions regarding disability services, creating inclusive policies, and understanding the prevalence and types of disabilities within the Canadian population.