Some folk songs serve the purpose of:

Preserving oral histories and legends
Imparting moral lessons
Expressing social commentary
All of the above

The correct answer is: d) All of the above.

Folk songs are a type of traditional music that is passed down orally from generation to generation. They often tell stories about historical events, legends, or moral lessons. Folk songs can also be used to express social commentary on current events or issues.

For example, the song “John Henry” tells the story of a man who competes against a steam hammer in a race to see who can drive a steel drill into a mountain the fastest. The song is often interpreted as a metaphor for the struggle between humans and machines.

The song “The Ballad of John Brown” tells the story of abolitionist John Brown, who was executed for his role in the raid on Harpers Ferry. The song is often used to express support for the abolitionist movement and to criticize slavery.

The song “Blowin’ in the Wind” by Bob Dylan is a protest song that asks a series of questions about peace, war, and freedom. The song is often interpreted as a call for social change.

These are just a few examples of how folk songs can be used to preserve oral histories and legends, impart moral lessons, and express social commentary.