Answer: Day in the life
Explanation:
Day in the life research technique is the method through which persona of any human or product can be improved. It helps in descriptive research through acquiring actual feedback regarding demographics, goals,responsibility etc.
It facilitates the researcher to understand gain information from the user about the use,modification , performing action with the product etc.
According to the question, Intuit is conducting day in the life research by sending tester team to observe the product use and manner of use done by users.It will help them to understand insight and performance of product.