In Which of the Following Situations Are You Most Likely

In which of the following situations are you most likely to want to use an event sampling?

A) You want to record information in each developmental domain so that you have a detailed profile.
B) You want to record events that have already occurred.
C) You want to test a very young infant's reflexes.
D) You want to see how often a child is being aggressive and what might have triggered the behaviours.