What button can you press and hold to make the Hand tool temporarily

Match the following groups with the item or function most associated with that group:

I. Citations & Bibliography II. Footnotes III. Changes IV. Comments V. Tracking A. Show the Reviewing Pane and Markup views B. Select a writing style C. Accept all changes and stop tracking D. Insert an endnote E. Add a note, included in a balloon

A formula always begins with a(n) ________

Fill in the blank(s) with correct word