Which of the following factors causes the demand curve for watches to shift to the right?

Explanation

An increase in the price of watches typically reduces quantity demanded rather than shifting demand. Lower prices of complementary goods like watch batteries might increase demand, but only if watches and batteries are complements. A fall in consumer income would decrease demand if watches are normal goods. Wage changes affect supply, not demand. Therefore, none of the options given correctly describe a factor that shifts the demand curve for watches to the right.