Final answer:
To resolve compatibility issues with a website, Russ should use Auditing tools to determine what updates are needed or switch to a different browser that is compatible. Patch finders could also be useful if browser updates are needed.
Step-by-step explanation:
When Russ reported an error that the website was not compatible with the browser version he was using, the best tools to troubleshoot this issue are B. Auditing tools. These tools can help by providing insights into compatibility issues and suggesting what needs to be updated or changed. Regular browser updates can often resolve such compatibility issues as well. If that doesn’t work, he could consider using D. Patch finders, which are designed to find and apply updates or 'patches' to software, potentially resolving compatibility problems. In some cases, a different browser might need to be used to access the website. A process manager oversees all the running processes on a computer, and a restorer would be more useful in returning a system to a previous state, not resolving compatibility issues.