Emily, a mother of two small children, decided to buy Subaru because she wants a car that is really safe when she drives her boys to school. When Emily consulted Consumer Reports, she found that the Subaru ranked very high on safety. Emily lives in Atlanta where there is heavy traffic so she is driving in a highly congested area and wants to feel at ease when she is behind the wheel. On Maslow's hierarchy of needs, what need is Emily trying to fulfill?

a. Need for affiliation

b. Need for security

c. Need for self-esteem

d. Need for respect