Here are the valid email addresses extracted from the provided text: ``` john.doe@example.com,jane@smith-family.net,support@company.co.uk,info@subdomain.example.org ``` I identified these email addresses using a regular expression to match common email address patterns that include a username, an @ symbol, and a domain name with a top-level domain extension such as .com, .net, .uk, or .org. I excluded email addresses that did not follow this pattern.