Final answer:
The first compartment of a three-component sink is used for soaking and washing dishes with detergent, which is the initial step in the cleaning process for dishes.
Step-by-step explanation:
In a three-component sink, the first compartment is typically used for soaking and washing dishes. This is the initial step in a process designed to ensure cleanliness. The sink is segmented into three parts for washing, rinsing, and sanitizing, which is a standard procedure in commercial kitchens and is often mandated by health regulations to prevent cross-contamination and to ensure that all dishes, utensils, and cookware are adequately cleaned. In the first basin, dishes are soaked and scrubbed with detergent to remove food particles and grease.