What Is the Most Reasonable Prediction One Can Make About

What is the most reasonable prediction one can make about Claudia's attempts to toilet train her 14­month­ old son?

A) She will be unsuccessful because he has not yet gained the ability to voluntarily control the muscles that govern elimination.
B) She will be unsuccessful because he enjoys the attention he receives when he eliminates in his diaper.
C) She will be successful because he is now able to voluntarily control the muscles that govern elimination.
D) She will be successful because he is at an age where he is motivated to achieve greater independence.