**Core Concept**
The Ferriman-Gallwey scoring system is a clinical tool used to assess and quantify hirsutism in females. It evaluates the presence and severity of excessive hair growth in various body regions, providing a numerical score to aid in the diagnosis and management of hirsutism.

**Why the Correct Answer is Right**
The Ferriman-Gallwey scoring system assigns points to each body area where excessive hair growth is observed, with a maximum score of 36. A score of 8 or higher is typically considered diagnostic of hirsutism, indicating excessive androgen activity. This scoring system helps clinicians differentiate between normal and abnormal androgen levels in females, guiding further evaluation and treatment. The scoring is based on the presence of excessive hair in nine body regions, including the upper lip, chin, chest, back, arms, and legs.

**Why Each Wrong Option is Incorrect**
**Option A:** A score of 4 would be considered normal or mild, and not diagnostic of hirsutism.
**Option B:** Scores below 8 are not diagnostic of hirsutism, as they do not indicate excessive androgen activity.
**Option C:** A score of 10 is above the threshold, but the question asks for the minimum score that indicates hirsutism.

**Clinical Pearl / High-Yield Fact**
The Ferriman-Gallwey scoring system is essential for clinicians to accurately diagnose and manage hirsutism, as it helps to differentiate between normal and abnormal androgen levels in females. A score of 8 or higher is a critical threshold for diagnosis, guiding further evaluation and treatment.

**Correct Answer: C. 8**