Professor Sanford explains that the need for physical safety must be met before city dwellers will be motivated to form close friendships with fellow citizens. Professor Sanford is providing an example of:A. task leadership.B. a hierarchy of motives.C. humeostasis.D. extrinsic motivation.E. instincts.

Abraham Maslow's hierarchy of needs emphasized upon the fact that once an individual is successfully able to satisfy the most basic needs, he/she moves towards fulfillment of other higher needs in the hierarchy which are less basic.

Maslow specified 5 needs in the order of priority, namely, basic psychological needs of food and shelter, security needs relating to being healthy and safe at the same time job security, belongingness which refers to being loved and socially accepted, esteem needs relating to an individual possessing self respect and commanding respect, self actualization needs which refer to achieving as per one's full potential.

The given case specifies security needs i.e physical safety and then the need for belongingness i.e friendship.