Which Statement Best Describes Children Who Lack Classification

Which statement best describes children who lack classification?

A) "They have understanding that objects can be simultaneously part of more than one class or group."
B) "They often attribute human thoughts and feelings to inanimate objects and forces."
C) "They often focus on one noticeable aspect of a cognitive problem to the exclusion of other important aspects."
D) "They have no understanding that objects can be simultaneously part of more than one class or group."