Final answer:
Sarah is determining the Monthly cash budget for her business.
Step-by-step explanation:
In the context of cash flow analysis, Sarah is determining the Monthly cash budget for her business. A monthly cash budget is a projection of all the inflows and outflows of cash for a business in a given month. By spreading out the total expenses evenly across 12 months, Sarah is estimating how much cash her business will need to cover expenses each month throughout the year.