Concept:Stock turnover period shows how many days, on average, stock is held before it is sold.Explanation:Use the formula:Stock turnover period=Cost of salesAverage stock×365Substitute the given values:300,00023,000×365First divide: 23,000÷300,000=0.07667 approximately.Then multiply by 365 days:0.07667×365=27.98 daysThis is approximately 28 days.Answer:A. 28 days