In the given situation, psychologists would call this a mere exposure phenomenon.
An advertisement is referred to as a tool of promotion that is used to create awareness about the product that a new product is launched and persuade customers to buy it.
It is referred to as the cheapest mode of promotion which has a higher and quicker reach to a large audience and promotes the product in the market.
The mere exposure experiment showed our ability to form favorites for items only because we are experienced with them.
In the example given, the person would previously change the channel whenever a particular advertising he did not like would appear, but with repeated exposure, he finally grew to enjoy it for what is known as the effects of mere exposure.
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