The results of a survey show that if a family is very clean and spotless, the family's happiness index must be relatively low. The reason is that there must be a very critical person in this family. As long as you put things a little crooked, he is not comfortable In families with children, toys are not easy to take out and play, and they are always neatly placed there. It is a crime to stay in this family, not to mention the happiness index. What is the main point of this passage? ['Very tidy, spotless family happiness index is low.', 'Children generally do not play toys easily in a tidy family.', 'There are always members of the family who are pickier, and the family will be very neat.', 'Family happiness index depends on whether the family has discerning members.']