ReCAPTCHA is a tool that prevents spam submissions on website forms. The Gravity Forms reCAPTCHA Add-On is enabled by default in all WordPress sites where Gravity Forms is being used. This enables reCAPTCHA on all Gravity Forms in use on the site.
Spam prevention is important for many reasons, such as website performance and security, but if for some reason you need to disable reCAPTCHA on a particular form, you can do so in the form settings. Simply visit the reCAPTCHA settings and check the box to disable reCAPTCHA.