Which of the Following Results Was Obtained Using the High-Amplitude

Which of the following results was obtained using the high-amplitude sucking method?

A) Babies blinked in response to a rapidly approaching auditory stimulus.
B) Babies attended more closely to speech sounds that resembled speech they heard in utero versus nonspeech sounds.
C) Babies preferred the sound of the father's voice to that of the mothers.
D) Over time babies stopped responding to the side in which a sound is presented.