Final answer:
The violin became the primary instrument for carrying the melody in instrumental music due to its versatility, portability, and powerful sound projection.
Step-by-step explanation:
The violin became the principal carrier of melody in instrumental music. During the evolution of music and musical instruments, the violin emerged as a highly versatile instrument, capable of producing a wide range of tones and dynamics suitable for different musical genres.
Its portability and ability to project sound made it ideal for use in various settings, from concert halls to intimate gatherings. The violin's resonant sound box amplifies the vibrations of its strings, creating a rich and powerful sound that carries the melody in orchestral and chamber music.