Explanation/Reference:
Explanation:
In order to accomplish the task, Rick should take the following steps: Select all the five sheets. Write a disclaimer message in the A1 cell of the active sheet. Grouping of sheets is a feature provided in Microsoft Office Excel 2013. Selecting more than one sheet groups those sheets. When multiple sheets are grouped, data that a user enters or edits in the active sheet is reflected in all sheets in the group. To select all sheets, right-click a sheet tab, and then click Select All Sheets on the shortcut menu.

C:\Documents and Settings\Administrator\Desktop\1.JPG Users can select multiple sheets by holding the Ctrl key while clicking the sheets.
Incorrect Answers:
Answer options A, B: Both these options will work, but Rick will have to work more than required. Grouping sheets is a better option to work simultaneously on multiple sheets. Users can select multiple sheets by holding the Ctrl key while clicking the sheets.
C: Clicking the first sheet after selecting all sheets will ungroup the sheets and the message will only get inserted in the first sheet.
References: https://support.office.com/en-ie/article/enter-data-in-multiple-worksheets-at-the-same-time-
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