The answer is "mass media".
Answer:
C. Social bonds
Explanation:
A lullaby, or cradle song, is a soothing song or piece of music that is usually played for (or sung to) children. Perhaps one of the most important uses of lullabies is as a sleep aid for infants. As a result, the music is often simple and repetitive.
Conductors help the musicians count and when to change volume. Also they help the musicians come in at the right time or to stop