Final answer:
The correct statement about internal control is option d: The cost-benefit relationship is a primary criterion that should be considered in designing an internal control system.
Step-by-step explanation:
The correct statement about internal control is Option d: The cost-benefit relationship is a primary criterion that should be considered in designing an internal control system.
Internal control is a system developed by an organization to safeguard its assets, ensure accurate financial reporting, and promote operational efficiency. When designing an internal control system, it is important to consider the cost-benefit relationship. This means that the cost of implementing and maintaining the control should not exceed the benefits gained from it.