Final answer:
The correct answer is 'O son'. The complete sentence is 'Las enfermeras son muy pacientes' which translates to 'The nurses are very patient' in English.
Step-by-step explanation:
The correct answer is O son.
In this sentence, 'muy pacientes' means 'very patient'. The subject of the sentence is 'Las enfermeras' which means 'The nurses'. So the complete sentence is 'Las enfermeras son muy pacientes' which translates to 'The nurses are very patient'.
The correct form of the verb 'to be' for third person plural in Spanish is 'son'.
Learn more about Spanish verb conjugation