Final answer:
Teaching someone else can help one remember how to solve a problem, making the statement false. A price ceiling does not usually shift demand or supply curves; it sets a legal price limit and can create excess demand.
Step-by-step explanation:
The assertion that teaching someone else how to solve a problem will not help you remember how to do it for yourself is false. Teaching others can reinforce one's own understanding and retention of material. When teaching, an individual will often reinforce their own learning by explaining concepts, which helps to consolidate their knowledge. Therefore, the correct answer to the problem statement would be (b) False only.
Regarding the second question, a price ceiling typically does not shift the demand or supply curve itself; rather, it creates a maximum price that can be legally charged for a good or service. However, it can lead to excess demand, also known as a shortage, when the ceiling is below the equilibrium price. Thus, the correct answer is (d) neither.
Illustration of a Price Ceiling
An equilibrium in a market is represented by the point at which the supply and demand curves intersect. If a price ceiling is set below this point, it will result in a quantity demanded that exceeds the quantity supplied - creating a shortage, but the demand and supply curves themselves do not shift.