Twelve-Month-Old Joshua Enters an Unfamiliar Laboratory Playroom with His Mother

Multiple Choice

Twelve-month-old Joshua enters an unfamiliar laboratory playroom with his mother. When she leaves, he gets distressed. When his mother hasn't returned after a few minutes, Joshua stops crying and starts playing listlessly in the far corner of the room. Joshua's behavior is an example of a:

A) hyperactivating strategy.
B) deactivating strategy.
C) denial strategy.
D) protest strategy.