The main idea of the text is that the Advertisers appeal to our unconscious thoughts and feelings in order to persuade us to buy products.
The advertising companies benefited from human minds by introducing subtle clues in their advertising to convince us to buy their products.
Hence, the main idea of the text is that the Advertisers appeal to our unconscious thoughts and feelings in order to persuade us to buy products.
In conclusion, the Option C is correct.
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