Answer :
Final answer:
Singing a song and omitting the last word of a line is an example of an intraverbal operant, as it involves the individual providing the missing word based on the song's context without direct correspondence to stimuli.
Explanation:
The student's question about singing a song while leaving out the last word in a line to assess a type of verbal operant is an inquiry into behavioral psychology, specifically within the framework of B.F. Skinner's analysis of verbal behavior. The correct answer to the question is A) Intraverbal. Intraverbals are a type of verbal operant that involves a response to verbal stimuli where the stimuli and response forms do not correspond exactly in terms of meaning.
In the case of omitting the last word of a line in a song, the expectation is that the individual will supply the missing word based on the context provided by the prior lyrics, which is a demonstration of intraverbal behavior. This type of activity does not fit the definitions of tact (labeling or naming objects, actions, or events), echoic (repeating what is heard), or mand (requesting or commanding).