Multiple Choice
Benjamin is a two-month-old baby who accidentally discovers his thumbs. He waves them around for a while and then sticks one of them in his mouth. He repeats this for a few times. Benjamin's behavior is an example of________.
A) a primary circular reaction.
B) a secondary circular reaction.
C) a tertiary circular reaction.
D) echolalia quaternary circular reaction.
Correct Answer:

Verified
Correct Answer:
Verified
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