Final answer:
Report significant issues such as a change in medication to the BCBA, as it can affect the client's behavior and treatment outcomes.
Step-by-step explanation:
When reporting to a Board Certified Behavior Analyst (BCBA), it's crucial to provide information that affects the client's behavioral intervention plan. Therefore, relevant reports would include any significant changes in medication, as medication can influence behavior. Hence, if the mother has repeatedly forgotten to give the client their medication, it should be reported to the BCBA. Although details like the client not eating breakfast or having a brief tantrum might be noteworthy, they may not be as critical unless they represent a pattern that is affecting the client's progress. Similarly, reporting on the client getting 100% on receptive body parts is good as it relates to tracking the client's progress towards specific learning objectives.