Concept:Logical deduction requires conclusions that are directly and necessarily supported by the given statement.Explanation:Conclusion I: The statement says the surge in visitors has damaged ancient monuments and local ecosystems. This directly supports that tourism can harm the very sites it promotes. So, conclusion I follows.Conclusion II: The statement mentions damage from increased visitors but does not say all tourists intentionally damage sites. This claim is not supported; hence conclusion II does not follow.Conclusion III: The statement explicitly says authorities are limiting access and introducing conservation fees. These are steps to reduce negative impact. So, conclusion III follows.Therefore, only conclusions I and III necessarily follow.Answer:B. I and III follow