Figure $4\mathrm{.}2$ shows the demand curves for a normal good. A shift from the demand curve D to the demand curve D$$ in the figure would be caused by a$($n$)$:

$$

Figure $4\mathrm{.}2$

Group of answer choices

decrease in the price of the good under consideration.

significant increase in population because of immigration.

decrease in consumer income.

decrease in the number of producers of the good.

increase in the price of an important resource used to produce the good.