The error in the possessive construction is that, instead of passenger's, it should be "passengers'". The apostrophe should be after the letter "s" because the noun is in the plural form. The correct sentence would be "Passengers' concerns about cell phone use on planes are justified."
Answer:
C. Macbeth vows to find King Duncan's murderer when, in fact, Macbeth himself has killed the king.
Explanation:
Irony is something that is so funny that it doesn't make sense.
An example is: A fire station burns down. Funny, right?
Same with answer C.
C. Macbeth vows to find King Duncan's murderer when, in fact, Macbeth himself has killed the king.