According to dynamic systems theory, a person's behavior is the product of ongoing interactions between the person's internal - and his or her external - and environmental contexts. For example, the Kipsigi people in Kenya deliberately train their children to -and then to__ with the result being that their children learn to walk anywhere from____ sooner, on average, than American and European children.
a. Biology
b. cultural
c. Sit
d. Walk
e. 1 to 2 months