'Bluetooth' is named after?

  1. Blue Whale

  2. Harald Blatand

  3. Harold Bleacher

  4. Bluetooth


Correct Option: B
Explanation:

To answer this question, the user needs to know the origin of the name "Bluetooth".

Option A, Blue Whale, is incorrect. The name Bluetooth is not derived from a blue whale.

Option B, Harald Blatand, is correct. Bluetooth technology is named after Harald Blatand, who was a 10th-century king in Denmark. Blatand means "Bluetooth" in English, and he was known for his ability to unite different tribes and nations, just as Bluetooth technology allows different devices to communicate with each other.

Option C, Harold Bleacher, is incorrect. The name Bluetooth does not have anything to do with Harold Bleacher.

Option D, Bluetooth, is incorrect. Bluetooth technology is not named after itself.

Therefore, the answer is: B. Harald Blatand.

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