https:// or http:/
Hope it helps;Pls mark as brainliest
Answer:
Ricardo should use the polite document form to inform the customer.
Explanation:
Ricardo should use the polite form of document, which involves:
-Date
-A proper salutation (Dear Mr.)
-A polite language vocabulary in the content using connectors such as nevertheless, despite, however, etc.
-A proper enclosure (Yours sincerely, at your services...)
-Your signature
