Are food and drinks allowed in Niagara Cave?

Food and drinks are indeed regulated within Niagara Cave to ensure a clean and safe environment for all visitors and to protect the cave's delicate ecosystem. The correct answer reflects the policy allowing food and drinks strictly for medical reasons. This exception acknowledges that some individuals may need to have access to food and beverages due to medical necessities, such as diabetes or other health conditions.

In contrast, the other options suggest broader restrictions or allowances that do not align with the established guidelines. For example, stating that food and drinks are completely prohibited at any time ignores the accommodated needs for those who require them for health reasons. Allowing them only during guided tours or solely permitting water, while beneficial in terms of maintaining environmental integrity or visitor comfort, does not accurately capture the provision made for medical needs. The unique allowance for medical necessities helps balance the need for visitor care with the cave's preservation.