The labor supply curve for an individual category of labor
a. will more likely be negatively sloped than will the supply curve for labor as a whole.
b. will more likely be negatively sloped than will the labor supply curve of an individual.
c. will almost certainly be positively sloped.
d. will be either negatively or positively sloped depending on the income effects of wage increases on the workers in that category.
Answer: c. will almost certainly be positively sloped.