Final answer:
The greatest financial impact on a single mother in her 30s is caused by daycare expenses being a strain on a single wage earner family.
Step-by-step explanation:
The greatest financial impact on a single mother in her 30s is caused by daycare expenses being a strain on a single wage earner family. The high cost of childcare can put a significant burden on a single mother's finances, as it can consume a large portion of her income. This can make it challenging for her to meet other financial obligations and can contribute to overall financial stress.