Should Rachel use internal or external recruitment techniques to staff these 50 positions?

Rachel Lucas is the human resources manager of a prestigious accounting firm. Rachel recently attended a local human resources professionals' association meeting where recruit1nent was the topic up for discussion.
At this meeting all aspects of the recruitment process, including recruitment methods and how to increase diversity through the use of application forms, were to be discussed. Rachel couldn't wait to apply what she learned at this meeting to her job.