**Core Concept**
Pregnancy is a complex physiological state that requires careful consideration of various factors to ensure the health and well-being of both the mother and the fetus. Certain conditions or medications can pose significant risks to the pregnancy, making it essential to identify contraindications and take appropriate measures.

**Why the Correct Answer is Right**
In the context of pregnancy, certain conditions or factors are generally considered contraindications due to the potential risks they pose to the mother or the fetus. However, not all conditions are absolute contraindications. For instance, certain conditions like epilepsy require antiepileptic medications, which are essential for managing seizures and preventing complications. Therefore, a careful evaluation of the benefits and risks is necessary to determine the appropriateness of pregnancy in these cases.

**Why Each Wrong Option is Incorrect**
* **Option A:** Uncontrolled hypertension is a significant concern during pregnancy, as it can lead to complications such as preeclampsia and fetal growth restriction. Pregnancy is generally contraindicated in cases of uncontrolled hypertension due to the increased risk of maternal and fetal morbidity.
* **Option B:** Certain infections, such as group B streptococcal infection, can pose significant risks to the mother and the fetus during pregnancy. Pregnancy is generally contraindicated in cases of active or untreated infections to prevent transmission and complications.
* **Option C:** Diabetes mellitus, particularly uncontrolled or poorly managed diabetes, can significantly impact pregnancy outcomes. Pregnancy is generally contraindicated in cases of uncontrolled diabetes due to the increased risk of maternal and fetal complications.

**Clinical Pearl / High-Yield Fact**
It is essential to note that certain conditions may not be absolute contraindications for pregnancy, but rather require careful management and monitoring to ensure a safe outcome. A thorough evaluation by a healthcare provider is necessary to determine the risks and benefits of pregnancy in individual cases.

**Correct Answer:** D.