Final answer:
Newborn infants' senses are not fully developed, but they already show a preference for faces and human voices. Vision, hearing, and smell are significant senses for newborns.
Step-by-step explanation:
Newborn infants' senses are not fully developed, but their preferences facilitate interaction with caregivers and other humans. Vision is their least developed sense, but they already show a preference for faces. Hearing is relatively well developed at birth, as newborns prefer human voices and can distinguish their mother's voice. Newborns also have a strong sense of smell, being able to distinguish the smell of their own mother from that of others.