Final answer:
Billy saying, "My name is Ricky" after Ricky said it is an example of the verbal operant echoic.
Step-by-step explanation:
The example given, where Billy says, "My name is Ricky," after Ricky says the same phrase, is an example of the verbal operant echoic. The echoic operant involves repeating spoken words or phrases. In this scenario, Billy is echoing Ricky's statement, demonstrating the echoic operant.