Babies begin to categorize on the basis of two correlated features by _____ months of age

Amy and Liam, currently college freshmen, have been dating exclusively since their sophomore year of high school. Their early, exclusive relationship signals emotional maturity beyond their years

Indicate whether this statement is true or false.

At about ___ months of age, children demonstrate that their attachment to their primary caregiver(s) has peaked

A) 2-6 B) 6-8 C) 9-12 D) 12-18