Answer ; D) will reinforce her behaviour and possibly create a long pattern of aggression and defiance
Reason ; In the given example, the four year old child is requesting for certain things or activity that she wants to have or do right now. The child is making that thing happen by means of aggresive manner such as attcking their parents with her fist. This act is longing until she gain what she has desired from their parents. These habbit will develop in her mind in an subconscious way and in later period it will develop has as kind of behaviour which is mentioned in the above action and that is helpful in some kind of defensive manner.
Other options with respective behaviour will not be developed by the activity which is given in the above example. Hence the above mentioned option is the appropriate one.
When four-year-old Deirdre wants an item or an activity, she will attack her parents with her...