What is the actual question???
<span>What type of advertising language tends to make extravagant and unrealistic claims about products without saying anything concrete, making it difficult to prove the truth or falsehood of the claim? Puffery. Puffery is defined as speaking or writing with false praise or exaggeration. This can be done with any type of writing/language but is common in advertising a product or service. It's hard to know what information is actually true about the product or service and what is spread far from it. </span>
Answer: Formal operational stage of cognitive development
Explanation:
Formal operational stage of cognitive development is the level of Piaget's theory of cognitive development where a person is able to generate hypothesis about world and things for answering issues.For solving certain problem, best predictions are made regarding to it in a systematic and orderly manner.
This type of thinking is considered scientific rather than hit and trial method because meaningful ,relatable and valid guesses are made in accordance with the question or problem.Then best way for solving problem is then concluded.