7.3 Your boss has asked you to describe how the demand for an over-the-counter sinus medication would change in the following situations. Assuming the price does not change, forecast whether the sales volume will go up, remain constant, or go down.

a. The local population increases.

b. A wet spring leads to a bumper crop of ragweed.

c. Factory closings lead to a drop in the area's average income.

d. A competing product with a different formula is found to be unsafe.

e. A research study showing that the medication causes severe dizziness is publis