Answer :
Final answer:
The question is asking about conditions for storing shellfish in a display tank. Among the options provided, obtaining a variance from the local health department might be the best one, as it involves a comprehensive assessment by health experts.
Explanation:
The subject of this question is the conditions under which shellfish can be stored in a display tank prior to service. According to the options provided, shellfish can be stored if either they can move around freely in the tank (Option A), water from different tanks is mixed (Option B), the air temperature is maintained at 55 degrees Fahrenheit (Option C), or if a variance has been obtained from the local health department (Option D).
However, it is important to note that in real-life situations, health regulations and sanitary practices strongly suggest not to simply rely on these conditions. Shellfish, like other aquatic life, require more specific conditions to be kept in tanks, not just movement, temperature, or water mixing. Unauthorized mixing of tank waters or improper temperature control could be harmful to the organisms.
Therefore, among the options provided, obtaining a variance from the local health department (Option D) might be the most secure and reliable condition as it involves comprehensive assessment of the tank conditions, suitable for shellfish storage and display, by health experts.
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