A field technician frequently presents training videos on a company-issued tablet that charges through its only USB-C port. Meeting rooms often lack Wi-Fi, and the tablet's built-in speakers are too quiet. The technician wants a portable external speaker that can play audio while the tablet remains on AC power. Which connectivity option BEST satisfies these requirements?
Connect a USB-C powered speaker to the tablet's port
Tap an NFC-enabled speaker against the tablet to stream audio
Plug in a 3.5 mm wired speaker using the tablet's audio jack
Use a battery-powered Bluetooth speaker and pair it with the tablet
A Bluetooth speaker pairs wirelessly with the tablet using short-range radio, so the speaker can operate without occupying the USB-C charging port. Because Bluetooth is a peer-to-peer technology, it does not depend on Wi-Fi availability. USB-C speakers would block the charging port, NFC does not support continuous high-quality audio streaming, and a 3.5 mm wired speaker requires a headphone jack that many modern tablets no longer provide and still adds a physical cable that limits mobility.
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Why is Bluetooth considered the best option for this scenario?
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Why wouldn’t NFC-enabled speakers be a good choice?
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What are the limitations of using USB-C powered speakers in this case?