Guatemalan Mayan Toddlers Are Able to Attend Simultaneously to Two

Guatemalan Mayan toddlers are able to attend simultaneously to two or three ongoing events. For example, one child "skilfully closed things in a jar with his older sister, whistled on his toy whistle…and at the same time watched a passing truck with interest." This situation was described in the textbook as

A) multi-tasking that reflects attention deficit hyperactivity disorder.
B) Type B behaviour.
C) an attentional pattern that mirrors that of his mother.
D) rare in Guatemala but more likely to happen in the U.S.