In a refrigeration system featuring low-side pump down prior to the automatic shutdown of the compressor, the temperature of the refrigerated space is controlled by the action of a thermostat wired to what device?

Correct Answer: Option A — liquid line box solenoid

During pump-down cycles, the refrigerated space thermostat directly controls the liquid line box solenoid valve. When box temperature reaches the setpoint, the solenoid closes, cutting off liquid refrigerant supply while the compressor pumps down the low side.