Explanation
To find the odd one out, we must analyze the fundamental mechanism used by each musical instrument to produce sound:
Violin: It is a string instrument where sound is produced by vibrating strings using a bow or plucking.
Guitar: It is a string instrument where sound is produced by plucking or strumming the strings.
Piano: It is a string instrument (technically a chordophone) where sound is produced by internal strings being struck by hammers when keys are pressed.
Drum: It is a percussion instrument where sound is produced by striking a stretched membrane (drumhead) with sticks or hands. It does not have any strings.
Since the Violin, Guitar, and Piano all rely on strings to generate sound, they share a common classification. The Drum stands out because it belongs entirely to the percussion family.
Correct Answer
The odd one out among the given options is Drum.
The correct option is (d) Drum.
