The verified answer to “Important Battles question: The Battle of Bhangani (1688) is associated with which Sikh Guru?” is Guru Gobind Singh, option C. The source-backed, question-specific record explains: The Battle of Bhangani (September 18 1688) was fought between Guru Gobind Singh and a coalition of hill rajas supported by Fateh Shah of Srinagar. Guru Gobind Singh won the battle establishing his military prowess. 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 C gives Guru Gobind Singh and satisfies every condition stated in the question. The remaining choices—Guru Har Gobind, Guru Tegh Bahadur and Guru Har Rai—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 Guru Gobind Singh without relying on option position.