Final answer:
The correct verb to fill in the blank is 'aprenden' which means 'learn' in English.
Step-by-step explanation:
The correct verb to fill in the blank in the sentence 'Los chicos ___ la lección' is C. aprenden. In this sentence, 'Los chicos' is the subject, which means 'the boys' in English. The verb 'aprenden' means 'learn' in English. So, the sentence translates to 'The boys learn the lesson'.
Learn more about Spanish verbs