Answer:
b. Concern.
Explanation:
William Shakespeare's tragedy "Macbeth" tells the story of a couple's greed for higher ambition and the repercussions that eventually led to their downfall. Macbeth and his wife had more greed for power which led them to kill their King and make themselves the ruler of the kingdom.
Banquo is another character in the play who was also given a prediction by the three witches. In Act I scene iii, when Ross and Angus brought news about the making of Macbeth as the Thane of Cawdor, Banquo admits that the whole thing is "strange". He then continued to show his concern when he said "And oftentimes, to win us to our harm,/ The instruments of darkness tell us truths,/ Win us with honest trifles, to betray ’s/ In deepest consequence".
Thus, the news of the Macbeth being made the new Thane of Cawdor made Banquo concerned for what is really in store for the coming future.
