Which food would be appropriate for a client who eats only kosher foods?

Halibut is an appropriate choice for a client who adheres to a kosher diet because it is a type of fish that meets the requirements outlined in kosher dietary laws. To be considered kosher, fish must have fins and scales, and halibut fits this criterion perfectly.

In contrast, shrimp, catfish, and lobster do not meet kosher standards. Shrimp and lobster are shellfish, which are prohibited in a kosher diet. Catfish, while having fins, does not possess true scales, making it non-kosher as well. Understanding the principles behind kosher dietary laws is essential for providing appropriate food choices to individuals with such dietary restrictions.