The correct answer is C) recovery from both the high and low sides. In a small appliance with a capillary tube as the metering device and a non-operating compressor, passive recovery should be performed by recovering the refrigerant from both the high and low sides. This is because the refrigerant will be distributed throughout the system, and recovering from both sides ensures maximum recovery. Recovering from only the low side or high side alone would leave some refrigerant trapped in the system, which is not permitted under regulations for proper refrigerant recovery. The other options are incorrect because A) recovering from the low side only would leave refrigerant trapped in the high side, and B) venting to the atmosphere is not allowed, as the refrigerant must be properly recovered and recycled or reclaimed. Option D) recovering from the high side only would also leave some refrigerant trapped in the low side.