Answer : 3. "ट्रेक चेंजेज"
Explanation :

1. MS to monitor all changes in the document. Track Changes features are used in Word 2010.

2. Track Changes is a way for Microsoft Word to keep track of changes you make to your text.

3. Track shift is also known as redline or redline. This is because some industries have historically drawn a vertical red line in the margin to indicate that some text has changed.