Passage Summary: Scientists noticed that newborn monkeys only copy the specific faces that adult monkeys make at them, while ignoring other types of movements.

Reasoning: Infant macaques mimic specific facial expressions (lip smacking and tongue protrusion) that adults use to interact with them, but they ignore other gestures like hand movements.

Analysis: The facts show a striking correlation: the only actions the babies imitated were the ones adults actually use to communicate with them. This suggests that even at a week old, macaques are socially attuned to specific communicative cues rather than just being general mimics. We should look for an answer choice that draws a connection between the babies' selective imitation and the social significance of those specific gestures.