Question

what advice does the public health department offer to those concerned about the safety of food?
loose lips sink ships
a penny saved is a penny earned
when in doubt, throw it out

Explanation:

The phrase "When in doubt, throw it out" is a common piece of advice in the context of food safety. It means that if there is any uncertainty about the safety or quality of food (such as whether it has been stored properly, has expired, or shows signs of spoilage), it is better to discard it rather than risk consuming potentially harmful food. The other two options are not related to food safety advice. "A penny saved is a penny earned" is about financial prudence, and "Loose lips sink ships" is a warning about the importance of secrecy, especially in sensitive or strategic situations.

Answer:

When in doubt, throw it out