Final answer:
The guitar is the most popularly used instrument in Folk Music due to its versatility, portability, and ability to accompany and play chords and melodies.
Step-by-step explanation:
The instrument most popularly used in Folk Music is the guitar. The guitar is a versatile and portable instrument that is well-suited for various styles of Folk Music, allowing musicians to accompany themselves and play chords and melodies. It is often the main instrument in many folk songs and is known for its distinctive sound and rhythmic patterns.
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