A(n) ________ can be a game, a puzzle, or a constantly changing data item such as a clock or calendar

Which of the following agents is called upon when directing a message to a specific user in a mail server?

a. Mail user agent b. Mail transport agent c. Mail delivery agent d. Application interface agent

?The fundamental building block in every Hypertext Markup Language (HTML) document is the _____ tag, which marks a component in the document.

A. ?head B. ?paragraph C. ?element D. ?anchor