In the Article, the Author Expresses That the Fact That

In the article, the author expresses that the fact that Ms. was asking companies to do business in a different way meant their saleswomen had to make many times the usual number of calls--first to convince agencies and then client companies besides--and to ______.

A) provide exceptional customer service
B) constantly validate their credentials to new clients
C) present endless amounts of research
D) seek out only high-profile clients.