Final answer:
The length of stay in a Skilled Nursing Facility (SNF) can vary, but the longest potential stay would be up to 30 days.
Step-by-step explanation:
The length of stay in a Skilled Nursing Facility (SNF) can vary depending on the individual's needs and condition. In general, Medicare will cover skilled care in a SNF for up to 100 days if certain criteria are met. However, most stays in a SNF are shorter than 100 days. According to the options provided, the longest potential stay would be up to 30 days (option d).