D is the correct answer because all of the other punctuation is wrong
A hook in an English paper is defined as an enticing statement that grabs the reader's attention. A good way to remember this is to perhaps think of the hook like a fishing hook. And what is the job of a fishing hook? To lure the fish with good bait and grab it and get it hooked.
Answer: B
Explanation:
A - 18 is not spelled out; should be 'eighteenth'
B - correct
C - no apostrophe in the decade; should be '50's'
D - name of the decade is spelled out; should be '1970s'
