Final answer:
The correct option to complete the sentence is 'Me lavo'. It means 'I wash myself' and is used to indicate washing the face with soap before sleeping.
Step-by-step explanation:
The correct option to complete the sentence is Me lavo.
Me lavo la cara con jabón antes de dormir means 'I wash my face with soap before sleeping'.
Here, 'Me lavo' translates to 'I wash myself' and is the appropriate verb to use in this context.
Learn more about Verb conjugation in Spanish