In a Head-Turn Preference Experiment, Researchers Alert the Child That

In a head-turn preference experiment, researchers alert the child that a sound will emanate from a particular direction by

A) turning on a light in that location.
B) pointing to that location.
C) having the parent, on who's lap the child is positioned, point to that location.
D) increasing and decreasing the volume of the sounds until the child looks in that direction.