The evidence points to option B, 1699. Guru Gobind Singh inaugurated the Khalsa at Anandpur in 1699, creating an initiated community marked by discipline, shared identity and the five symbols. The distractors need separate rejection: 1675 belongs to a different institution, context or chronology; 1708 does not perform the function described in the stem; and 1604 fails the required association. The wording of “The Khalsa was inaugurated by Guru Gobind Singh at Anandpur in which year?” is deliberately specific, so the candidate should isolate its operative clue before recalling names. — 1699”, but also remember the factual reason stated above.