From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences. But for the night g...

Answer Details

The correct answer is option C, "would have been." The sentence is written in the past tense, and the "but" indicates that the night guard's vigilance had a significant impact on the outcome of the situation. The word "burgled" indicates that the factory was at risk of being broken into or stolen from. Option A, "would be," is in the present tense and doesn't match the tense of the sentence. Option B, "will be," is in the future tense and doesn't match the tense of the sentence. Option D, "will have been," is in the future perfect tense, which implies that the sentence is discussing a future event that will have already been completed by a certain point in the future. This doesn't make sense in the context of the sentence, which is discussing a past event. Therefore, option C, "would have been," is the most appropriate choice, indicating that the factory was at risk of being burgled, but the night guard's vigilance prevented that from happening.