Final answer:
Thiazolidinediones are contraindicated in class III and IV heart disease and symptomatic heart failure due to their potential to cause fluid retention and worsen heart failure.
Step-by-step explanation:
Among the medications listed, thiazolidinediones (c) are contraindicated in patients with class III and IV heart failure and symptomatic heart failure. This class of drugs is known to cause or exacerbate congestive heart failure in some patients due to their effect of increasing fluid retention. As class III and IV represent more severe stages of heart disease, the use of thiazolidinediones could significantly worsen the patient's condition. While other medications like sulfonlyureas and meglitinides affect blood glucose levels and can cause hypoglycemia, they are not specifically contraindicated due to heart failure itself. However, it's important to note that all drugs must be carefully considered in the context of a patient's overall health and other conditions.