I believe the answer is: b. a sense of urgency, which causes a person to take action.
This is the basic difference between needs and wants. When a need is unfulfilled, people would experience a certain level of threat to their survival , which is why it create a sense of urgency to fulfill. Examples of needs are food. drinks, and shelter.
Foreign aid. Foreign aid is money, materials, and services given or loaned by governments, organizations, and individuals in rich countries to help people in poor countries.
