Final answer:
A decrease in the wages paid to workers who produce a good would likely lead to a decrease in production costs and could result in an increase in supply, not an increase in price.
Step-by-step explanation:
Among the provided options for a competitive market for a normal good, the one that cannot result in an increase in price is d) a decrease in the wages paid to workers who produce this good. This is because if wages for workers decrease, the cost of production goes down, which could lead to an increase in supply rather than an increase in the price of the good. On the other hand, an increase in income (a), a decrease in the price of a complement (b), and an increase in the price of a substitute (c) all can lead to an increased demand for the good, thus potentially increasing its price.
- An increase in income typically boosts the demand for normal goods, leading to higher prices.
- A decrease in the price of a complement can enhance the demand for the associated good, again possibly driving up prices.
- An increase in the price of a substitute can shift demand to the lower-priced normal good, which may also result in a higher price for that good.