A. Multimedia Instrument Digital Information
B. Multimedia Instrument Digital Interface
C. Musical Instrument Digital Interface
D. Musical Information Digital Information

Solution

C. Musical Instrument Digital Interface

Explanation

MIDI (Musical Instrument Digital Interface) is a protocol designed for recording and playing back music on digital synthesizers that is supported by many makes of personal computer sound cards. Originally intended to control one keyboard from another, it was quickly adopted for the personal computer.