How would a Business Practitioner ensure that only orders with a subtotal greater than $50 can be created on the storefront?

A merchant asked the Business Practitioner to change the footer template of all emails. The merchant is using Magento Open Source.
How would the Business Practitioner achieve this with minimal effort in the Admin Panel?

In Magento Open Source, when would a Zero Subtotal checkout be used?

Which two payment options are available in Adobe Commerce, but not in Magento Open Source? (Choose two.)

A merchant wants to display their eCommerce application in two languages - English and Spanish. Customers should also be able to switch displayed catalog price currencies between US Dollars and Mexican Pesos regardless of the language.
What is the minimum amount of websites, stores and store views to achieve this?