The news of 'a woman selling her child to obtain food' may be understood best on the basis of

Maslow's hierarchy of needs explains this extreme behavior best - when basic physiological needs (food, survival) are unmet, humans will resort to extreme measures to survive. A mother selling her child to obtain food represents the desperate prioritization of survival over all other needs. Psychoanalytic theory (A) focuses on unconscious conflicts, psychosocial theory (C) on social development stages, and reinforcement theory (D) on behavior modification - none explain survival-driven desperation as comprehensively as Maslow.