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Members of the nightshade family are known for being high in solanine and can lead to problems such as back pain and arthritis in some individuals if cooked and consumed before being ripe. Which of the following is not a member of the nightshade family of vegetables?

  1. Eggplant

  2. Potatoes

  3. Spinach

  4. Tomatoes

The correct answer is: Eggplant

Eggplant is not a member of the nightshade family of vegetables because it has low levels of solanine and is not known to cause problems like back pain and arthritis if consumed before being ripe. Whereas, potatoes, tomatoes, and spinach are all members of the nightshade family and have higher levels of solanine, potentially causing problems if not properly cooked. Therefore, A is not the correct answer while B, C, and D are all members of the nightshade family.