Final answer:
To correct the sentence from the student's question, option B 'it was' should be used, and the phrase 'had burst' should be included to properly sequence the events and maintain tense agreement.
Step-by-step explanation:
The student asks how to correct the sentence: "By the time the police arrived, the entire truck burst into flames, it is fueled by the hundreds of gallons of gasoline on board." The sentence can be better structured by addressing the tense and providing a subject for the second clause. The best option for correcting this sentence would be:
B. it was.
The corrected sentence would then read: "By the time the police arrived, the entire truck had burst into flames, it was fueled by the hundreds of gallons of gasoline on board." This corrects the tense agreement and provides a clear subject 'it' for the second clause. It's also important to note that including 'had' creates a more accurate sequence of events, indicating that the bursting into flames occurred in the past perfect tense, prior to another past action, which is the arrival of the police.