Application of Skills Directions

Multiple Choice

Application of Skills Directions:
Apply the knowledge you have gained from Chapter 23 to answer the following questions.
Which of the following sentences uses comma rules correctly?

A) Speaking before an audience was not one of his strengths, but my brother learned to become better at this skill.
B) Speaking before an audience was not one of his strengths but my brother learned to become better at this skill.
C) Speaking before an audience, was not one of his strengths but my brother learned to become better at this skill.
D) Speaking, before an audience was not one of his strengths but my brother learned, to become better at this skill.