Question

the button temporarily merges your main document and data source so that you can view and test

Answer 1

Answer:

ask in other app ok with the activity

Answer 2

Explanation:

Mail merge button allows you to temporarily merge documents which are main document and data source

Mail merge is the feature that is used to create multiple letters at once in a word processing tool. Mail merge allows to combine mails and letters have the same content that needs to be send to mass number of people. This is a quick and efficient approach of mail handling