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 has not 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.