In the context of Maslow's hierarchy of needs theory, which of the following individuals has satisfied her safety needs at her workplace?
a. Sally, a lawyer at Knick Corp., who has been given the opportunity to become a partner at the firm
b. Dora, who has received a warm welcome from her team members after returning from a three-month sabbatical
c. Renee, an assistant manager at Osmosis Spa, who has been promoted to the managerial position because of her dedication to work
d. Sara, who has been hired for a permanent position in a start-up firm after being unemployed for over six months