If you want an infant to focus on a sound, that sound should A. be played as part of the background.
B. be part of a longer series of sounds, such as an orchestral piece of music.
C. be a monotone.
D. have a distinct beginning and end.
(It’s not A)

Behavioral science is the study of human behaviors and how they can be influenced.  by examining patterns in behavior as well as reactions, individuals with behavioral problems can be more adequately treated, resulting in greater mental health of our society/the public.