A Business Practitioner is assisting a merchant to create a free shipping rule.

[Reference: How to Display a Custom Message on All Pages in Magento 2 | Meetanshi: https://meetanshi.com/blog/add-custom-notice-to-top-of-page-in-magento-2/, Explanation:, A CMS block is a reusable piece of content that can be displayed on any page in the store. This means that you can create a CMS block with the message "free shipping on all orders until 31st December" and then insert the widget that displays the CMS block on all pages., This is the most flexible option, as you can customize the message and the way it is displayed. However, it is also the most complex option, as you need to know how to create and manage CMS blocks., The other options are not as flexible. Option B, adding the message to the header promo variable, will only display the message on the header of the page. Option C, creating a CMS page with the message, will only display the message on the page that you create., Therefore, the best option is to insert a widget to display a CMS block with the message., Here are the steps on how to insert a widget to display a CMS block with the message:, Go to Stores > Configuration > Advanced > Layout., Click Add Widget., Select CMS Block from the list of widgets., Enter the name of the CMS block that you want to display., Select the All Pages layout update., Click Save., The widget will now be displayed on all pages in the store., ]