You can tell if they were influenced either negatively or positively by looking at their connotation and diction
Fiverr works just like any other marketplace. Sellers list their services (gigs) and buyers who are interested in these services ask questions and if they are satisfied with answers, purchase them. Fiverr works like a middleman guaranteeing both parties are happy with the end result.
90% sure it's D. And I have to make this answer long or else I can't submit it so that's why I added this whole sentence