Which of the Following Is an Appropriate Example of a Scoring

Which of the following is an appropriate example of a scoring procedure for a behavioral observation?

A) Sally presses a counter every time a toddler looks in the direction of his or her mother during the clinic visit.
B) Annika presses a button on her handheld computer every time, during the work day, that she becomes aware of a craving for a cigarette.
C) Tomás makes a hatch mark on a piece of paper every time one spouse interrupts the other during a recorded conversation.
D) All of the above are appropriate scoring procedures.