Kathy Is a Human Resource Manager Who Is Constantly Filling

Kathy is a human resource manager who is constantly filling new positions at a rapidly expanding technology company. One of Kathy's biggest priorities is to show current employees that there is a long-term future for workers to work hard and grow within the company. What type of hiring policy should Kathy take part in to encourage this belief?

A) Fill all positions from within
B) Select the hardest working employees from within to fill open positions
C) Find new talent at college job fairs
D) Request current employees to provide referrals from family and friends