The idea that is being sold by this advert is that there is freedom of expression.
What is freedom of expression?
This is the freedom that is part of the fundamental rights of people. This type if freedom is contained in the constitution. It gives the people the right to live freely.
Hence the answer to the question is freedom of expression because that is what is shown here.
Read more on freedom here: https://brainly.com/question/13273450
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