What role do glucocorticoids, such as cortisol, play in the body?

Glucocorticoids, such as cortisol, are crucial hormones produced by the adrenal glands, particularly during times of stress. They primarily regulate the body's stress response by influencing various physiological processes. When faced with stress, cortisol helps to mobilize energy by increasing blood glucose levels and providing the body with the necessary resources to respond effectively to challenging situations. It also plays a role in modulating immune response, reducing inflammation, and impacting metabolism.

In addition to their role during stress, glucocorticoids affect carbohydrate, protein, and fat metabolism, which can ultimately influence overall health and homeostasis. Their regulatory function ensures that the body can manage stressors efficiently, making option B the most accurate description of their primary role in the body.