In musical form, what technique lets us recognize previously presented melodies, harmonies, and rhythm patterns?

repetition

Explanation:

Repetition is a technique in which the musical notes and musical passages are repeated. It exposes the humans' ears to the rhythm created through repetition of the music. The tune, music, and the harmonies are recognized by the human ears when they are exposed repeatedly. Music has a lasting effect in the ears and mind because of its repeated exposure.

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.