Final answer:
Jung's concept of the collective unconscious is reflected in the recurrent dream of snakes shedding their skins, signifying universal archetypes such as transformation. Therefore, the correct answer is B. Collective unconscious.
Step-by-step explanation:
A patient recalling recurrent dreams of snakes shedding their skins is tapping into what Carl Gustav Jung referred to as the collective unconscious. This concept suggests that certain dream symbols reflect universal archetypes common to all humans, regardless of culture. According to Jung, the image of a snake, which is often seen as a symbol of transformation due to its skin-shedding, could embody the archetype of rebirth or personal growth. Therefore, the correct answer is B. Collective unconscious.