Which of the following is considered a source of inflow for a business besides cash sales?

Credit sales represent a significant source of inflow for a business, as they enable companies to make sales even when payment is not received immediately in cash. When a business sells goods or services on credit, it recognizes revenue at the time of sale, which can help improve cash flow over time as customers pay their invoices. This process expands a company's ability to generate income and maintain operations, as it essentially allows businesses to sell more without requiring immediate cash investment from customers. Consequently, credit sales are a crucial component of many businesses' revenue strategies, enhancing liquidity and supporting growth.

While options like increased expenses, inventory purchases, and decreased capital are relevant to a business's financial situation, they do not contribute to inflows. Instead, they indicate costs or a reduction in available resources, which can affect the overall financial health negatively.