Q. Which method stacks the prescribed level(s) from columns to index?

  • (A) stack()
  • (B) unstack()
  • (C) melt()
  • (D) pivot()
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✅ Correct Answer: (A) stack()
Explanation: stack() pivots the columns of a DataFrame into the index, compressing it into a Series with a MultiIndex.

Published by Sikhar Chaudhary ⭐ 6.79K Points at 06-Oct-2025 06:56 am in Pandas

Explanation by: Sikhar Chaudhary
stack() pivots the columns of a DataFrame into the index, compressing it into a Series with a MultiIndex.

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