Near what should oxygen not be flowing?

Oxygen should not be flowing near open flames or heat sources because oxygen is a highly flammable gas that supports and accelerates combustion. In environments where oxygen is present, the risk of fire significantly increases when combined with any type of flame or high heat. If oxygen is released near these elements, it can lead to a rapid and uncontrollable fire, potentially resulting in severe injury or property damage.

In contrast, options like closed windows or electrical outlets, while presenting their own safety considerations, do not inherently pose the same immediate risk of combustion when oxygen is present. Therefore, the primary safety concern is the presence of flames or heat sources which can interact dangerously with the increased oxygen levels.