Answer:
Direct marketing
Step-by-step explanation:
In simple words, Direct marketing relates to the means of selling an deal, where companies specifically interact with a pre-selected client and provide a mechanism for veiled reference. It has also been recognized as direct reaction marketing amongst practitioners.
The least likely to be successful is indeed a direct marketing message that is sent to the largest possible public. After all, while simply irritating several other beneficiaries, the business can gain few more consumers.