Important Battles question: The First Battle of Tarain (1191) was won by which ruler?

The verified answer to “Important Battles question: The First Battle of Tarain (1191) was won by which ruler?” is Prithviraj Chauhan III, option B. The source-backed, question-specific record explains: The First Battle of Tarain was fought in 1191 between Prithviraj Chauhan III of the Chahamana dynasty and Muhammad of Ghor. Prithviraj won and Muhammad Ghori was injured. Prithviraj let him go which proved costly the next year. 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 B gives Prithviraj Chauhan III and satisfies every condition stated in the question. The remaining choices—Muhammad of Ghor, Qutb ud-Din Aibak and Iltutmish—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 Prithviraj Chauhan III without relying on option position.