Problem
Which best describes the diameter of a circle? A. The distance from the center to any point on a chord of the circle B. The distance around the circle C. The distance across the middle of the circle D. The distance from the center to any point on the circle
Solution
Step 1 ：The diameter of a circle is the distance across the circle through its center.
Step 2 ：\( \boxed{\text{Final Answer: C. The distance across the middle of the circle}} \)
