Final answer:
The question pertains to a co-worker's knowledge of a 'code 99' and their corresponding response, which is related to emergency protocols in a workplace environment.
Step-by-step explanation:
The question "Does the Co-worker know what a code 99 is & what to do?" is asking whether a co-worker is aware of a specific protocol or emergency response code within a work environment. A code 99 typically refers to a critical emergency that needs immediate attention, although the exact definition can vary by institution or company policy. Employees are often trained to respond to such codes according to their workplace's standard operating procedures, which may involve securing the area, providing assistance, or calling for further emergency response. The answer to this question would be dependent on whether the co-worker in question has been trained on this protocol.