Answer:
2. LAW OF DEMAND
Step-by-step explanation:
LAW OF DEMAND states that there is inverse relationship between price & quantity demanded. Quantity demanded is more at lower prices, quantity demanded is less at higher prices. The demand curve - graphically representing price demand relationship, is downward sloping because of Law of Demand.
In the given cases : Ice cream price rise from $4 to $30 decreases quantity demanded. Chocolate sauce price fall from $5 to $0.5 increases quantity demanded. So, the above examples of Ice Cream & Chocolate Sauce illustrate the case of 'Law of Demand'