In One Example, Konrad Lorenz Demonstrated Imprinting When __________

In one example, Konrad Lorenz demonstrated imprinting when __________.

A) he conducted the first fMRI tests on infant-parent attachment
B) a flock of newborn baby geese followed him around, thinking he was their "mother"
C) he conducted a worldwide study on infant recognition of their parents' voices
D) he conditioned dogs to salivate at the sound of a duck quacking