Which of the following represents momentary time sampling?

Momentary time sampling is a method used in behavioral observation to capture the occurrence of a behavior at specific points in time rather than continuously throughout the observation period. The correct description of this method involves checking whether a behavior is occurring at the very end of a predetermined interval. Therefore, it is accurate to say that recording behavior when the interval ends represents momentary time sampling. This approach allows observers to evaluate the presence or absence of a behavior without the need for continuous monitoring, making it an efficient way to collect data over extended periods.

The other options describe different methods of observing and recording behavior that do not align with the principles of momentary time sampling. For instance, recording behavior throughout the observation implies continuous monitoring, which is contrary to the momentary sampling technique.