Which food choice is appropriate for a client adhering to a kosher diet?

Salmon is an appropriate food choice for a client adhering to a kosher diet. In kosher dietary laws, fish with fins and scales are considered kosher, and salmon falls into this category, making it suitable for consumption.

On the other hand, pork is not permissible in a kosher diet as it comes from an animal that does not have both split hooves and chew its cud. Chicken is also a kosher bird, but combining it with cheese violates the prohibition of mixing meat and dairy products in kosher dietary rules. Shrimp is classified as shellfish and is not kosher because it lacks fins and scales. Hence, salmon is the only option that fully complies with the dietary restrictions of a kosher diet.