Bluetooth provides low power wireless communication over short distances, typically within ten metres. It is commonly used for connecting peripherals like headphones, keyboards and speakers to phones or computers. The standard is optimised for ease of pairing and moderate data rates rather than long range coverage. Hence, the technology described is Bluetooth.
Option A:
Option A, WiMAX, is designed for broadband wireless access over long distances and is not typically used for personal area connections between nearby devices.
Option B:
Option B is correct because Bluetooth is widely recognised as the standard for short range wireless links among personal devices, matching the examples in the stem.
Option C:
Option C, Wi Fi, supports higher data rates and longer ranges in local area networks and is usually used for internet access rather than direct peripheral connectivity.
Option D:
Option D, NFC, stands for near field communication and is used for very short range interactions such as contactless payments, not general purpose audio or peripheral links.
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