Which of the following items is classified as dangerous goods?

Wheelchair batteries are classified as dangerous goods because they possess the potential to cause harm due to their chemical composition and operational capacity. Specifically, many wheelchair batteries are rechargeable lithium-ion or lithium metal batteries, which can pose various hazards if not handled correctly. These types of batteries may cause fires or explosions if they are damaged, improperly packaged, or short-circuited. Recognizing these risks, regulatory frameworks such as the International Air Transport Association (IATA) and other safety guidelines categorize these batteries as dangerous goods, requiring specific handling and transportation regulations to ensure passenger safety.

On the other hand, food items, clothing, and electronics typically do not contain hazardous materials that would classify them as dangerous goods under aviation regulations. Food items are generally safe for transport, clothing poses no inherent risks, and while some electronics may contain batteries, many are designed to comply with safety standards that mitigate risks, thus not classifying them as dangerous goods.