Answer:
An effective advertising message tells customers the benefits of what you have to offer.
Step-by-step explanation:
The main goal of an effective advertising message is to convince the potential customer population that their product is right for them and is the best choice in the current market. This is done by telling customers the benefits of what you have to offer. If the advertisement shows customer that the product provides a needed benefit to them it will be an efficient advertisement and convince them to buy it.