What's a good way to see which required questions in the configuration wizard don't have default values?

What’s a good way to see which required questions in the configuration wizard don’t have default values?

What’s a good way to see which required questions in the configuration wizard don’t have default values?
A . Answer only questions that involve custom objects
B . Try each option in the dropdown one at a time
C . Download the app and run a SAQL query on the JSON
D . Click "Looks good, next" and look for questions highlighted in red

Answer: D