When someone hums 'Twinkle, Twinkle Little Star," it sounds exactly like when someone hums the alphabet song. What do these two songs have in common?
ОА
texture
OB. dynamics
Ос.
timbre
OD. melody

OD. melody

Explanation:

melody

Explanation:they all share a common melody

the answer is counterpoint.

counterpoint definition: "the art or technique of playing a melody or melodies in conjunction with another, according to fixed rules."

counterpoint is present in a lot of baroque music- such as bach (notably his wtc prelude and fugues) and scarlatti, but can also be found in music by mozart, beethoven. it can even be found in music as modern as john williams!