The correct option is C ; Seeks information that he can tell the murderers. He also reminds the killers of their motivation for killing Banquo: they were mistreated by him on some previous occasion.
To excuse his conduct, Macbeth tells them that if he could murder Banquo without disturbing their common friends, he would. Banquo's short soliloquy has two purposes: It reminds the audience of the details of the Witches' prophecy in Act I, and it reveals his own suspicion that Macbeth is Duncan's murderer.
Macbeth intends to murder Banquo and his son Fleance. He needs to know Banquo's plans in order to frame him.
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