The correct answer is a) cortisol.
Mineralocorticoids and glucocorticoids are both classes of steroid hormones produced in the adrenal cortex. Aldosterone is the main mineralocorticoid, which plays a crucial role in regulating sodium and potassium levels, and thus blood pressure. Similarly, cortisol is the principal glucocorticoid, which is involved in a wide range of functions, including the regulation of metabolism and the body’s response to stress.
The other options – estrogen, epinephrine, and testosterone – do not fit this comparison as they belong to different hormone categories. Estrogen is a primary female sex hormone, epinephrine is a catecholamine involved in the fight-or-flight response, and testosterone is the primary male sex hormone. Thus, the relationship between mineralocorticoids and aldosterone mirrors that of glucocorticoids and cortisol.