**Core Concept**
Cerebral blood flow refers to the flow of blood through the brain, supplying it with oxygen and nutrients. Normal cerebral blood flow is crucial for maintaining proper brain function. It is regulated by various factors, including blood pressure, **carbon dioxide levels**, and **neuronal activity**.

**Why the Correct Answer is Right**
The correct answer is based on the average value of cerebral blood flow in a healthy adult. Under normal conditions, the brain receives approximately 15-20% of the total cardiac output, which translates to around 750-1000 ml/min, considering an average cardiac output of 5000 ml/min. This value can vary depending on factors such as age, sex, and overall health.

**Why Each Wrong Option is Incorrect**
**Option A:** This value is too low to support normal brain function.
**Option B:** This is also lower than the required cerebral blood flow for normal brain activity.
**Option D:** This option exceeds the normal range of cerebral blood flow.

**Clinical Pearl / High-Yield Fact**
Normal cerebral blood flow is essential for maintaining proper brain function, and any significant deviation from this range can lead to neurological deficits.

**Correct Answer:** C. 750-1000 ml/min