Final answer:
Addison's disease (secondary) is the correct answer because it refers to the hyposecretion of adrenal cortex hormones due to dysfunction in the hypothalamus or the pituitary gland.
Step-by-step explanation:
The correct answer is b. Addison's disease (secondary). Addison's disease is a disorder characterized by the hyposecretion of the adrenal cortex hormones, primarily cortisol. In primary Addison's disease, the dysfunction originates from the adrenal glands themselves. However, in secondary Addison's disease, the dysfunction originates from the hypothalamus or the pituitary gland, leading to a decrease in hormone production from the adrenal cortex.