Final answer:
The correct action before disposing of an appliance containing refrigerant is to remove the refrigerant and record the quantity to avoid environmental damage.
Step-by-step explanation:
Before disposing of any appliance containing refrigerant, the correct action is to remove the refrigerant and record the quantity. This is important to ensure that harmful refrigerants do not get released into the atmosphere, which can contribute to environmental damage, such as ozone depletion and global warming. Appliances like refrigerators use a refrigerant in a cycle of compression and expansion to transfer heat from inside the appliance to the surrounding air. When disposing of such an appliance, it's necessary to handle the refrigerant properly according to environmental protection guidelines. Therefore, the correct answer to the student's question is A) remove the refrigerant and record the quantity.