A behavior analyst works with a young child named Ben with ASD who engages in delayed echolalic speech. During free play, the practitioner observes the child reprimanding a doll for having wet pants, referring to the doll as 'Ben'. Then, the child grabs the doll and shakes it repeatedly. Additionally, there appears to be some bruising on Ben's arm. What should the behavior analyst do?
1) Contact the parents and discuss the observations and get their side of the story.
2) Speak with the classroom teacher so the teacher can check into the issue.
3) Make a report of potential abuse to the authorities.
4) Develop a data-collection procedure to establish a pattern of behavior.