Final answer:
The correct answer is d) Guarding device. A guarding device is a permanent barrier that is used to prevent fingers and hands from entering a hazardous area.
Step-by-step explanation:
The correct answer is d) Guarding device. A guarding device is a permanent barrier that is used to prevent fingers and hands from entering a hazardous area. It can be made of various materials and may include features such as interlocks or sensors to ensure proper functioning.