Which of the following was cited by Zigler and his colleagues supporting universal preschool in the United States?
a. The quality of inner-city schools has often been found to be of questionable quality.
b. It is more important to improve preschool education for young children who are disadvantaged than to fund preschool education for all 4-year-old children.
c. Universal preschool would bring billions of dollars of cost savings because of a diminished need for remedial and justice services.
d. Research has proven that the gains attributed to preschool and kindergarten education are often overstated