What is this snippet?

Hello,

Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.

From your screenshot, it seems that you’re referring to the Sitelinks Schema. Rank Math automatically includes it in your homepage’s Schema.

Please note that Google Sitelinks aren’t something that you can enable, activate, or opt-in for. It is up to Google to enable them for a website that they think is authoritative for a given query. There is no specific setting or Schema to instruct Google to display links in Sitelinks.

You can check this link for more information and a guide on how to increase the chances to show it on your site:
https://rankmath.com/kb/google-sitelinks/

Hope that helps.

Thank you.