Final answer:
The correct answer is 'B. sacó'.
Step-by-step explanation:
The correct answer is B. sacó. The sentence is in past tense, so we need to use the preterite form of the verb 'sacar' (to take out). In this case, the subject of the sentence is 'mi hermano' (my brother), who performed the action of taking out the trash on Sunday. Therefore, the correct conjugation in the third person singular is 'sacó'.
Learn more about conjugation of the verb 'sacar'