The correct preterite verb to fill in the blank is 'B. se enojó,' meaning 'got angry.' This choice reflects a completed action that occurred when the brother learned about the broken guitar. The other options do not fit the context appropriately. ;
The correct answer is B. se enojó, meaning 'got angry.' The sentence describes a completed action where the brother became angry after discovering his guitar was broken. This option fits the context of the sentence best compared to the other choices.
;