Read the following context and choose the best option to answer the question.
Context: You ca n't . You ca n't . I know that words are powerful , even words spoken silently to ourselves . We build ourselves up or tear ourselves down by what we say . And I know that we are usually our own harshest critic . But sometimes it pays off to step out of that comfort zone and do something a little different , to try something that terrifies .
Question: Why may it good to step outside one 's comfort zone ?
Options: 
A. You find out what people think of you .
B. None of the above choices .
C. You grow in courage .
D. You find out who likes you .


C