Final answer:
The correct EXCEL function for computing the yield on the investment given the cash flows in cells B5 through B9 is =IRR(B5:B9), which calculates the internal rate of return.
Step-by-step explanation:
The correct function for computing the yield on an investment in Microsoft Excel, given the cash flows $(5,200) as the cost of the investment in cell B5 and the following cash flows in cells B6 through B9 ($2,100, $1,300, $1,800, and $1,200 respectively), is the IRR function. The cash flows represent the amounts at the end of years one through four. Therefore, the appropriate formula would be option B, which is =IRR(B5:B9), as it computes the internal rate of return for a series of cash flows represented by numbers in the cells B5 through B9.