I – changes in consumer preferences
II – changes in real income
III – changes in the distribution of incomes
IV – changes in levels of taxation
A. I, II
B. II, III
C. I, III, IV
D. I, II, III, IV
Correct Answer: Option D
D. I, II, III, IV
Explanation
Consumer preferences (Taste), Income, taxation, advertisement, population, weather conditions, price of other commodities are shift. Factors that affect or change or shift the demand curve.
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