Correct option is C
Bluetooth technology was named after King Harald "Bluetooth" Gormsson, a 10th-century Viking king of Denmark and Norway. He was known for uniting the Danish tribes into a single kingdom, symbolizing how Bluetooth connects different devices seamlessly.
Important Key Points:
- King Harald's Nickname: He was called "Bluetooth" because of a dead tooth that appeared bluish-black in color.
- Bluetooth Symbol: The logo combines the runes for the letters H and B from King Harald's initials.

- The name reflects the goal of uniting various communication technologies under a single standard.
Knowledge Booster:
- Sweyn Forkbeard: King of Denmark and England, not associated with Bluetooth.
- Hardecanute: Danish king and son of Cnut the Great, unrelated to Bluetooth technology.
- Magnus the Good: Norwegian and Danish king, also not linked to Bluetooth.
- Bluetooth Technology: A wireless standard developed in 1994 for exchanging data over short distances.
- Significance of the Name: Bluetooth's naming symbolizes the unification of communication protocols, akin to King Harald's unification of Denmark.