Read the excerpt from The Strange Case of Dr. Jekyll and Mr. Hyde. My provision of the salt, which had never been renewed since the date of the first experiment, began to run low. I sent out for a fresh supply and mixed the draught; the ebullition followed, and the first change of colour, not the second; I drank it and it was without efficiency. You will learn from Poole how I have had London ransacked; it was in vain; and I am now persuaded that my first supply was impure, and that it was that unknown impurity which lent efficacy to the draught. What is the complication in this excerpt?
Answer
A
Mr. Poole finds Dr. Jekyll’s chemicals and is trying to use them himself.
B
Dr. Jekyll has forgotten the secret formula needed to make his transformation.
C
Mr. Poole has discovered and disclosed the true identity of Mr. Hyde.
D
Dr. Jekyll’s formula will work only with an impure salt he can no longer find.
Explanation
Jekyll mixes a new draught with a fresh supply of salt, but it does not cause the transformation. He concludes that the original salt must have contained an unknown impurity that made the formula work. Because he cannot find that impurity again, his formula no longer works; this is the complication described in choice D.
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