Which of the following leads to the development of the "biological self"? a) Psychological and social needs b) Interactions with the physical environment c) Reflex actions d) Biological needs d) Personal achievements and comforts

c and d

The first elements of self can be noticed when a newborn child cries for milk when hungry. Although this cry is based on reflex, it later leads to the development of the awareness that "I am hungry." This biological self, in the context of the socio-cultural environment, modifies itself. Therefore, the development of the biological self is attributed to reflex actions and the fulfillment of biological needs.