Final answer:
The most accurate statement is that there is a positive cost variance, as the project's actual costs are lower than the budget by $4,000, indicating under-budget performance.
Step-by-step explanation:
The statement that is most accurate concerning the final performance report of an enhancement project with a budget of $72,000 and actual costs of $68,000 is that You have a positive cost variance. Cost variance is calculated by subtracting the actual costs from the budget at completion. In this case, the cost variance would be $72,000 (budget) - $68,000 (actual costs) = $4,000. As the actual costs are lower than the budget, the variance is positive, indicating that the project is under budget.