Final answer:
Websites with .gov, .edu, and .org are usually linked to governmental, educational, and non-profit organizations respectively and are generally seen as more trustworthy. However, not all content on the web is regulated; thus, users must assess the reliability of the sources themselves.
Step-by-step explanation:
The question concerns the reliability of different types of domain extensions on the web. It's a common belief that websites ending in .gov, .edu, and .org are more reliable than those with .com or .ca because of their respective affiliations. A .gov extension indicates a website is affiliated with the federal government, a .edu implies a connection to an educational institution, and a .org usually signifies a non-profit organization. In contrast, a .com domain is commercial, and .ca is a country code domain for Canada. While the former are considered more trustworthy for their authoritative backing, it is crucial to remember that not all information on the Internet is regulated for quality or accuracy; the burden of assessing the reliability of any resource rests with the user.