Answer:
The correct answer is option D.
Explanation:
A change in the quantity demanded is shown by a movement along the same demand curve. A change in quantity demanded happens because of a change in the price of the commodity while other factors affecting demand remain constant.
A change in the demand is shown by a shift in the demand curve. It happens when the price level remains the same but other factors change.
The other factors affecting demand for a commodity are the income of the consumer, population, tastes, and preferences, etc.
Demand and supply plays a very important role in the determination of price in the economy and are called the determinants in an economy.
The statement " A change in quantity demanded is a movement along the demand curve, and a change in demand is a shift of the demand curve" , option D is correct.
Demand curve is a graphical representation of data given in the demand schedule. Demand curve shows the relationship between the quantity demanded of a good or service in comparison with the price of that particular product or service in an economy.
The quantity demanded changes due to the change in price of a product or service other things being constant , which results in a movement along the demand curve.
However, the change in demand due to the factors affecting it other than price results in the leftward or rightward shift in the demand curve.
Therefore, the statement " A change in quantity demanded is a movement along the demand curve, and a change in demand is a shift of the demand curve" , option D is correct.
Learn more about Demand curve here:
brainly.com/question/1915798
