Final answer:
The question appears to be asking if it's true that the recommended temperature for a freezer is -18°C.
Recommended temperatures can vary, but -18°C is often advised. Therefore, it would be true if the manufacturer recommends this temperature.
Step-by-step explanation:
The question seems incomplete, but it seems to be asking if it's true or false that the recommended temperature for a freezer by its manufacturer is -18°C. Assuming this is the case, it's important to note that the recommended temperature for freezers can vary depending on the manufacturer's guidelines. Other factors would also be the type of food stored and the climate in the environment. However, a common recommendation is to set the freezer temperature at -18°C. So if a manufacturer recommends -18°C, it would be true.
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