You are creating a worksheet in Excel 2010. You want to add a visible digital signature to your
worksheet. Which of the following steps will you take to accomplish the task?

A.
Click the Add a Digital Signature option in the Protection ribbon of the Page Layout tab.

B.
Click the Add a Digital Signature option in the Protection ribbon of the Data tab.

C.
Click the Add a Digital Signature option in the Protect Workbook option at Backstage.

D.
Click the Add a Digital Signature option in the Protection ribbon of the Insert tab.

Explanation:
Excel 2010 provides various ways to protect your worksheet. One of the options that it provides is to
add a digital signature. Digital signature is a technique to authenticate digital documents by using
computer cryptography. A digital signature not only validates the sender’s identity, but also ensures
that the contents of the document have not been altered. It verifies that the source and integrity of
the document have not been compromised since the document was signed.
Excel 2010 provides the Protect Workbook feature to enhance and maintain security and integrity of
a workbook. The feature provides the following options: