Final answer:
The increase in single-parent families can be attributed to the rise in divorce rates.
Step-by-step explanation:
One factor that has contributed to the increase in single-parent families over the last several decades is the rise in divorce rates. Divorce can lead to one parent assuming the role of the primary caregiver, resulting in a single-parent household. For example, a study by the American Psychological Association found that 40-50% of marriages in the United States end in divorce, often leaving one parent to raise the children on their own.
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