GENERAL KNOWLEDGE

Detailed explanation-1: -When the price of the commodity falls, the quantity demanded rises. It leads to the downward movement of the demand curve. It is also known as expansion of demand.

Detailed explanation-2: -A movement along the demand curve occurs when there is a change in price. This may occur because of a change in demand conditions. The factors affecting demand are assumed to be held constant. A change in price leads to a movement along the demand curve and it referred to as a change in quantity demanded.

Detailed explanation-3: -Expansion and contraction are represented by the movement along the same demand curve. Movement from one point to another in a downward direction shows the expansion of demand, while an upward movement demonstrates the contraction of demand.

Detailed explanation-4: -Expansion of demand is shown by a downward movement on the same demand curve. Contraction of demand is shown by an upward movement on the same demand curve.