I believe the correct answer is the parents'
household rules unpredictably change.
For children's well-being the most important is the
consistency in parenting style which is why if the household rules suddenly
change in unpredictable matter children will get confused and have a hard time
adapting to the new conditions. Apart from that, for the children’s well-being is also important to show love and flexibility in varying their child-rearing
strategies to provide the best discipline-environment fit.
