Final answer:
The correct answer is 'A. duerme'.
Step-by-step explanation:
The correct answer is A. duerme. In this sentence, 'el bebé' is the subject and 'duerme' is the verb. The verb 'duerme' means 'to sleep'.
In Spanish, the present tense is often used to express ongoing actions or general truths. So, 'duerme' can be translated as 'sleeps' or 'is sleeping' in English. Option B, 'está durmiendo', would be used if the action was happening at the exact moment of speaking.
Therefore, the most appropriate answer is A. duerme.
Learn more about Spanish Verbs