Answer:
The outcome of punishment that the parenting expert is going to note from the parents is: Punishment can lead the children to perform agressive behavior .
Explanation:
To understand this answer we need to analyze all of the options of this exercise.
First of all, punished children don't perform better in school so it's wrong it won't be brought up to the topic.
Second, Punishment doesn't motivate children to focus on homework so it won't be brought up to the topic.
Third, Punishment increases the number of nightmares. It could but punishment isn't necessarily a traumatic experience. Punishment is law and authority. Not violence, violence does trigger traumatic episodes like nightmares.
Fourth, punishment can also lead to the children to act aggressively. Correct, children who have not received good parenting use violence to manifest their unconformity in front of authority figures. But it is the fault of the authority figure or letting the children commit antisocial behavior. So, it will be brought up to the topic.