📊 React Js
Q. What is the role of a key in a list of elements?
  • (A) To apply styles
  • (B) To identify which items changed
  • (C) To improve performance
  • (D) To bind events
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✅ Correct Answer: (B) To identify which items changed

Explanation: Keys help React identify which items have changed, are added, or removed.

Explanation by: Mr. Dubey
Keys help React identify which items have changed, are added, or removed.

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