It persuades people to buy that product by informing them about it rhough various media.
the equilibrium price increases
The quantity of the the products bought tends to fluxuate a lot. The prices tend to stay somewhat stable. It is opposite for inelastic demand,
quantity of a product that buyers are willing & able to buy ..
decrease if the demand decreases and increase if demand increases
We cannot predict the market clearing price, but know that the equilibrium will increase.