Final answer:
In economics, an increase in demand leads to a rise in the equilibrium price.
Explanation:
An increase in demand, all other things unchanged, will cause the equilibrium price to rise; quantity supplied will increase.
A decrease in demand will cause the equilibrium price to fall; quantity supplied will decrease.
Therefore, situation D (Both the demand and supply rise) would cause the price of a product to increase the most.
Learn more about Supply and Demand here:
https://brainly.com/question/32830463
