Which of the Following Is NOT an Example of the Language

Which of the following is NOT an example of the language achievements that first occur during middle childhood?

A) the use of words that are derived from basic words by adding a prefix or a suffix
B) the ability to convince others through polite persuasion
C) the creation of complex sentences that include inflections
D) the use of correct forms of past tense and proper descriptions of events that occurred in the past