Answer:
E) the two-step approach to direct marketing.
Step-by-step explanation:
In marketing, the two step approach refers to a sales process that starts with a sales lead, e.g. phone calls, emails, etc., and then the second (or third, fourth, etc.) step is basically closing the sale, e.g. a customer calls seeking for information about a product he read about in an email, and a sales representative closes the sale.
The basic idea here is that first a sales lead is generated (step one) ⇒ a sales representative closes the sale (step two).