**Core Concept**
The **hypothalamic-pituitary axis** is crucial for regulating various hormonal secretions. The **anterior pituitary** receives hormonal signals from the **hypothalamus** to stimulate or inhibit the release of its hormones. However, some hormones are under different control mechanisms.

**Why the Correct Answer is Right**
In a transection between the **hypothalamus** and **anterior pituitary**, the production of **Antidiuretic Hormone (ADH)** and **Oxytocin** would be affected as they are produced by the **hypothalamus** but secreted by the **posterior pituitary**. However, **ADH** and **Oxytocin** production in the **hypothalamus** itself would not be directly affected by the transection. Among the options not provided, **ADH** production remains unaffected in terms of its synthesis but its release is affected.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because the production and release of most anterior pituitary hormones are affected by the transection due to the loss of hypothalamic control.
**Option B:** Incorrect as the transection impacts the stimulatory or inhibitory signals from the hypothalamus to the anterior pituitary.
**Option C:** Incorrect because, without the specific details of each option, we recognize that hormones directly controlled by the hypothalamus via the anterior pituitary would be impacted.

**Clinical Pearl / High-Yield Fact**
The **posterior pituitary** hormones, **ADH** and **Oxytocin**, are synthesized in the **hypothalamus** but released by the **posterior pituitary**, making their production less dependent on the intact connection between the **hypothalamus** and **anterior pituitary** for their synthesis.

**Correct Answer:** D. ADH