Final Answer:
After a customer has vomited on the food service counter, the first action should be to dispose of contaminated food. Option A is the answer.
Step-by-step explanation:
The immediate response to a customer vomiting in a food service area is crucial for health and safety. Disposing of contaminated food is a priority to prevent the spread of pathogens and ensure the well-being of other customers. Options B and D are inappropriate; closing the facility for cleaning and continuing service in the affected area without proper cleanup pose health risks. Covering the vomit with paper towels (Option C) is insufficient; it's essential to dispose of contaminated items properly and follow up with a thorough cleaning and sanitization process to maintain a safe food service environment.
Option A is the answer.