Paste Option in Word 2016 and 2013 is displayed when you try to copy and paste any content in the document. The Paste Options allows users to Merge Formatting, Keep Source Formatting and Keep Text Only. Word by default displays Paste Option.
But for some reason if the Paste Option is hidden then you can unhide it using the Settings provided as part of Word Options.
Step 1: Click File menu and select Options from the list.
Step 2: In the Word Options window, click the Advanced tab.
Step 3: Scroll down the Advanced option and navigate to Cut, copy and paste section.
Step 4: Make sure to mark the check box with caption as “Show Paste Options button when content is pasted”
Step 5: Click Ok button to confirm and save the changes.