Final answer:
The Tab key is the correct answer; it allows users to navigate from one item to the next in forms and user interfaces.
Step-by-step explanation:
The keyboard key that allows you to move from one item to the next is the Tab key. When you press the Tab key, the cursor moves to the next field or element in a document, form, or a user interface. This function is particularly useful when navigating through forms with multiple text fields or buttons, allowing users to quickly move without having to use a mouse. The Tab key can also be used in combination with the Shift key to reverse the direction, moving to the previous item instead. In contrast, the Enter key typically submits forms or triggers button actions, the Shift key is used to capitalize letters or access upper-case symbols, and the Space key inserts a space.