B, the hook is to get the reader's attention.
Answer:
'Had Bought'
Explanation:
The infinitive 'to buy' turns into 'had bought' in past perfect. The PAST TENSE is simply 'bought', but the PAST PERFECT tense is 'had bought'.
Answer:
we don't go to school....
he gives the order to have banquo killed so he could cover his tracks.
he thinks banquo is starting to realize whats going on and before he has the chance to say anything macbeth has him murdered