Could you help explain “How an exploratory case study could be goodness of work that is pleasing to the Lord?”

What are the case study types and could you help explain and make an applicable example.What are the 4 primary case study designs/structures (formats)?

The Fortune Company is considering a new investment. Financial projections for the investment are tabulated below. The corporate tax rate is 24 percent. Assume all sales revenue is received in cash, all operating costs and income taxes are paid in cash, and all cash flows occur at the end of the year. All net working capital is recovered at the end of the project.   Year 0 Year 1 Year 2 Year 3 Year 4 Investment $ 28,000         Sales revenue   $ 14,500 $ 15,000 $ 15,500 $ 12,500 Operating costs   3,100 3,200 3,300 2,500 Depreciation   7,000 7,000 7,000 7,000 Net working capital spending 340 390 440 340 ?