<span>A. Classical Conditioning
Little Albert was initially exposed to a variety of stimuli and displayed no fear towards them.
In the next step of the experiment, when Little Albert was again exposed to a rat, the experimenters hit a pipe to make a loud noise, causing Little Albert to cry. This pairing of the stimuli of loud noise and rat was continued repeatedly. After enough repetitions, Little Albert began to cry just by seeing the rat.
The experiment involved the unconditioned and conditioned stimuli and responses of classical conditioning.
Unconditioned stimulus: loud noise
Unconditioned response: fear
Conditioned stimulus: rat
Conditioned response: fear</span>
<span>PCR is a relatively simple process because it only requires three cycles to produce enough of the desired DNA.
False
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