Important Battles question: On what date was the First Battle of Panipat fought?

The source-backed, question-specific record explains: The first of the three major Battles of Panipat was fought on 21 April 1526 between Babur and Ibrahim Lodi. The date distinguishes it from the second battle in November 1556 and the third in January 1761. The original wording “which months” was grammatically confused because one date was required. This evidence establishes the historical relationship required in this Important Battles item. A correct solution must preserve the exact battle, date, participants, commander, location, outcome or significance requested by the stem. Similar periods, genres or national traditions do not make two battle facts interchangeable. Option A gives 21 April 1526 and satisfies every condition stated in the question. The remaining choices—5 November 1556, 14 January 1761 and 17 March 1527—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms 21 April 1526 without relying on option position.