Correct option is D
The correct answer is (d) Computer mouse.
• Douglas Engelbart is credited with the invention of the computer mouse in the 1960s.
• He developed the mouse as part of his work on augmented human-computer interaction at the Stanford Research Institute (SRI). Engelbart's mouse was a revolutionary input device that allowed users to interact with computers in a more intuitive way, which was demonstrated in his famous "Mother of All Demos" in 1968.
Information Booster:
- (A) Compact disc: Invented by James Russell and developed by Sony and Philips in the 1980s, not Engelbart.
- (B) USB port: Developed by Intel and other companies in the 1990s, to standardize connections for peripherals.
- (C) Floppy disk: Developed by IBM in the 1960s as a data storage medium, not related to Engelbart.