For what conditions can exemptions be given according to the standards?

The correct choice pertains to conditions that may justify obtaining exemptions in the context of DOT medical standards, primarily related to the safety and operational capability of commercial drivers. Hypertension, Diabetes Mellitus, and Coronary Artery Disease are all chronic conditions that, when well-managed, can allow individuals to operate commercial vehicles under specific conditions.

Hypertension must be controlled to avoid complications that could impair driving, such as sudden health emergencies. For Diabetes Mellitus, the key consideration is the driver’s ability to maintain stable blood sugar levels, particularly to prevent hypoglycemic episodes which could be dangerous when driving. Coronary Artery Disease is similarly significant because it can lead to sudden cardiac events that may pose severe risks while driving.

Each of these conditions is well-documented with established management protocols that help ensure that affected individuals can safely operate commercial vehicles, provided they meet certain medical guidelines and monitoring requirements. The other choices contain conditions that might not qualify for exemptions under the same stringent criteria or are less commonly noted in DOT standards for driving exemptions.