Which accessories are compatible with the iPhone?

The option indicating Lightning cables and AirPods as compatible accessories for the iPhone is correct because both are designed to work seamlessly with the device. Lightning cables are the primary means of charging and transferring data for iPhones, thus making them integral accessories. AirPods, being Apple's wireless earbuds, use Bluetooth technology to connect with iPhones, allowing for a convenient audio experience that is specifically tailored for Apple devices.

The other options do include some accessories that may be compatible, but they are not as definitive or representative of the extensive range that works with the iPhone. While Bluetooth speakers can connect to an iPhone, USB drives typically require specific compatibility considerations, especially when dealing with file transfers. Saying that only official Apple-branded products are compatible is too restrictive, as many third-party accessories also work effectively with the iPhone. Lastly, asserting that only wireless charging pads are compatible overlooks the variety of connection options available to iPhone users, such as Lightning and various audio accessories. Therefore, Lightning cables and AirPods represent typical and widely recognized accessory categories that enhance the iPhone experience.