Chapter 13 Discussed Research Conducted in China on Infants' Ability

Chapter 13 discussed research conducted in China on infants' ability to recognize their mother's voice 1 or 2 weeks before the infants were born. In one condition, infants heard their mother's voice reading a poem. This research was appropriately conducted because, in the second condition, infants heard

A) their mother reading the same poem at a different time.
B) their mother reading a different poem.
C) another woman reading a different poem.
D) another woman reading the same poem.