Final answer:
Nurse was another slave in Medea's household.
Step-by-step explanation:
The answer to your question is 4) Nurse. Nurse was another slave in Medea's household. In the play 'Medea' by Euripides, Nurse is one of the main characters and serves as a confidante and advisor to Medea. She plays a crucial role in helping Medea carry out her revenge against Jason, who is Medea's ex-husband.