TOEFL Listening: ETS-TOEFL听力机经 - 32N14K_7WE1Y4KGZP$

What does the student mean when he says this: A. He doubts that people are born with the ability to make social evaluations B. He wonders how researchers came to conclusions about infants' abilities C. He doubts that all infants have the exact some social-evaluation skills D. He does not understand why infants need social-evaluation skills