Final answer:
The study referenced does not specifically address preschool-aged children's mothers but indicates that 76% of mothers with junior high school children are employed, and 36% of those employed mothers work part-time, yielding approximately 27.36% of all mothers working part-time. The provided options cannot be concluded without specific data on preschool-aged children's mothers.
Step-by-step explanation:
The question refers to the labor participation of mothers with preschool-aged children. According to the study by Maria Donovan Fitzpatrick, it's important to clarify that the information provided in the study references mothers of junior high school children, not preschool-aged children.
However, a relevant fact from the study is that 76 percent of the mothers are employed. Since 36 percent of the employed mothers work part-time, you can calculate the percentage of all mothers in the population that are employed part-time by multiplying these two percentages.
The calculation would be 0.76 (76% employed mothers) times 0.36 (36% of those work part-time), equaling approximately 27.36% of all mothers working part-time.
Without information specific to preschool-aged children mothers' employment rates, we cannot choose from the multiple-choice options provided in the question.
However, the study can give us insights into mothers' employment trends, which suggest the answers would likely exceed 25% and could be around the 50% or higher mark.