The correct answer is C. Intel 4004.
The Intel 4004 was the first commercially available microprocessor chip. It was developed by Marcian Hoff, Federico Faggin, Stanley Mazor, and Masatoshi Shima at Intel in 1971. The Intel 4004 was a 4-bit microprocessor that could perform 60,000 operations per second. It was used in calculators, cash registers, and other early electronic devices.
The Intel 8008 was a 8-bit microprocessor that was released in 1974. It was used in the Altair 8800, one of the first personal computers.
The Motorola 6809 was a 16-bit microprocessor that was released in 1979. It was used in the Commodore 64, one of the most popular home computers of all time.
None of the above is not the correct answer.