Final answer:
Prep work for salads in a commercial kitchen involves preparing ingredients, with 'slicing vegetables' being the most related task among the choices given.
Step-by-step explanation:
In a commercial kitchen, prep work for salads typically involves tasks related to preparing ingredients that will go into the salads. Of the options listed, c. Slicing vegetables is the task that would most likely be associated with prep work for salads. The other options, such as grilling, baking, and brewing coffee, pertain to different types of food preparation that are not directly related to salad preparation.