Answer:
before, during, and after the campaign through the use of pretests, inquires and posttests.
Step-by-step explanation:
Advertising campaigns can be defined as the advertisement of a product that focuses mainly on communicating a similar type of message to the potential customers. This can be achieved through different mediums inorder to create an awareness about the product.
Measurement of an effective advertising campaign is very necessary, it is used to determine how well a product will sell in the market.
The effectiveness of an advertising campaign can be evaluated by utilizing pretests, inquires and posttests to determine if the potential customers have seen the advertisement and how well they are responding to it.