Answer:
If the child twirls hair for any part of the 30 seconds
Explanation:
Your supervising BCBA asks you to take data on a preschooler’s hair-twirling behavior. She operationally defines the behavior for you, and asks you to use partial interval recording with 30-second intervals. You mark the behavior as having occurred if the child twirls hair for any part of the 30 seconds.
Answer:
A-It leaves unanswered questions in the reader's mind
Explanation: