Correct Answer:
B. broke
The correct answer is B: broke. This question assesses your knowledge of simple past tense verbs, specifically irregular verbs. The key indicator for the past tense in this sentence is the adverb of time, "yesterday," which clearly places the action in the past.
- "Broke" is the simple past tense form of the irregular verb "to break." It correctly describes an action that was completed at a specific time in the past.
- Option A, "break," is the base form or present tense of the verb, which is incorrect for an action that occurred "yesterday."
- Option C, "broken," is the past participle form. It requires an auxiliary verb (e.g., "has broken" for present perfect, "was broken" for passive voice) to form a complete verb phrase, and it cannot stand alone as the main verb in this active voice sentence.
- Option D, "breaking," is the present participle form, used in continuous tenses (e.g., "was breaking") or as a gerund, neither of which fits the context of a completed action yesterday.
Thus, "Who broke the window yesterday?" correctly uses the simple past tense to inquire about a past event.