Which circle c shows a chord that is not a diameter?

You have not provided the diagrams, therefore, i cannot give an exact answer.however, i can you with the concept.now, a chord is defined as a line that joins two points lying on the circumference of the circle.diameter of the circle is a chord that passes through the center if the circle. it is considered the longest chord in the circle.to better understand this, check the attached image showing the difference between the two.hope this : )