Final answer:
The interpersonal need described in the question is the need for affiliation. When individuals like Sarah rely on others to make decisions for them and seek out dominant individuals, they are displaying a need for affiliation.
Step-by-step explanation:
The interpersonal need described in the question is the need for affiliation.
When individuals like Sarah rely on others to make decisions for them and seek out dominant individuals, they are displaying a need for affiliation. This need is characterized by a desire to belong and connect with others.
It is important to note that the other options mentioned in the question, inclusion, control, and affection, are also interpersonal needs, but they do not fit the description provided.