A Child Is Practicing Scales on His Piano

A child is practicing scales on his piano. His mother can't wait until he learns some chords so that she can hear several notes together, rather than one note at a time. In psychological terms, the scales are comparable to ________ processes and the chords are comparable to ________ processes.

A) serial; parallel
B) parallel; serial
C) stimulus categorization; response selection
D) response selection; stimulus categorization