**Core Concept**
The question is asking about the conditions in which the ovaries function normally. This involves understanding the hormonal regulation of ovarian function, specifically the role of the hypothalamic-pituitary-ovarian (HPO) axis. The HPO axis is a complex feedback system that regulates the menstrual cycle and reproductive processes.

**Why the Correct Answer is Right**
The correct answer is **Turner Syndrome**, which is a condition where one of the X chromosomes is missing or partially deleted. In Turner Syndrome, the ovaries are usually present but non-functional due to the absence or abnormality of the X chromosome. However, in some cases, individuals with Turner Syndrome may have a small amount of ovarian function, allowing for spontaneous pubertal development and menstruation.

**Why Each Wrong Option is Incorrect**
**Option A:** **Premature Ovarian Failure (POF)** - This is a condition where the ovaries stop functioning before the age of 40, leading to premature menopause. The ovaries do not function normally in POF.

**Option B:** **Kallmann Syndrome** - This is a genetic disorder characterized by delayed or absent puberty and an impaired sense of smell. The ovaries do not function normally in Kallmann Syndrome due to the absence of gonadotropin-releasing hormone (GnRH) secretion.

**Option C:** **Androgen Insensitivity Syndrome (AIS)** - This is a condition where an individual is genetically male but resistant to androgens. The ovaries are not present in AIS, and the individual has a male karyotype.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the HPO axis is a delicate balance of hormones, and any disruption can lead to reproductive disorders. Understanding the complex interactions between the hypothalamus, pituitary gland, and ovaries is crucial for diagnosing and managing conditions related to ovarian function.

**Correct Answer: C. Turner Syndrome**