Answer: the correct option is E.
Explanation: Direct marketing can be referred to as an advertising strategy that implements an individual distribution of a sales pitch directly the to potential customers. The delivery systems used here, include, mail, e-mail, texting, and calls.
This method of marketing is called direct marketing because it is usually carried out without the use of middleman such as advertising media. This is because it will make no economical sense to utilize the media to market to just one particular customer.
Therefore, the direct method of marketing is not used in combination with other forms of promotional media.