Based on the Brain Development Research,what Is the BEST Advice

Multiple Choice

Based on the brain development research,what is the BEST advice to give parents about toilet training?

A) Toilet training is possible at any age if a child has many opportunities to practice.
B) Actively toilet train a child,but only when the relevant parts of the brain come on-line.
C) Never toilet train,because at the right age a child will automatically know what to do.
D) As every child is different,it is not possible to give helpful advice for all children.