So, there's two we can eliminate immediately. That's the first two. Anything with a .gov is a reliable source because it's made by the government. And things with a .edu are reliable because they are made for education.
Now we have it down to two. We can get rid of www.schools.us because .us means it has to be an organization.
Now a .com, anyone can make. So www.careers.com is our site that needs addition investigation.
Hope this helps! Have a great day!