Final answer:
The correct answer is (c) poor reliability. Design freedom, increased productivity, and operating flexibility are advantages of using CAM systems.
Step-by-step explanation:
The correct answer is (c) poor reliability. While the other options such as design freedom, increased productivity, and operating flexibility are advantages of using a CAM (Computer-Aided Manufacturing) system, poor reliability is not. CAM systems allow for greater design freedom by enabling complex shapes to be manufactured easily. They also increase productivity by automating processes and reducing the need for manual labor. Additionally, CAM provides operating flexibility and allows for quick design modifications.