Which of these had the greatest impact on the success of the northern renaissance?

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be that it was "A) funding from wealthy patrons" that had the greatest impact on the success of the Northern Renaissance, since without this funding most of the artists would not have been able to work. 

The correct answer is d

Ithink it’s a ! hope this