The set that is not correctly matched, among the following, is

Options :
  1. Tea-Caffeine
  2. Coffee-Tannin
  3. Tobacco-Nicotine
  4. Opium-Morphine
Answer and Explanation :-

Answer: Option 2

Explanation:

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Security is mostly a superstition. It does not exist in nature, nor do the children of men as a whole experience it. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure, or nothing.
-Helen Keller The Open Door