In behavioral terms, what type of data is required to measure the time taken for James to begin work when prompted?

The correct choice focuses on measuring the time interval from the moment a prompt is given to when James actually begins his work. This specific measurement is known as latency, which reflects the delay or time taken for a behavior to occur following a cue or stimulus. In behavioral analysis, latency is crucial because it helps assess responsiveness to prompts, indicating how quickly an individual reacts to a given instruction or signal.

Duration measures the length of time a behavior occurs, and frequency counts how often a behavior happens within a set period. While both are important metrics in behavior analysis, they do not apply to the situation where the focus is on the time taken before the behavior starts, instead of the behavior’s length or occurrence rate.