What role does cortisol play in the body?

Cortisol plays a crucial role in the body's stress response by increasing blood glucose levels, which provides an immediate source of energy for muscle and brain function. This hormone is released from the adrenal cortex in response to stress and low blood glucose levels, and it functions to enhance the body's ability to manage stressful situations.

By increasing glucose availability, cortisol helps ensure that vital organs and tissues have the energy necessary to respond to stressors. Additionally, cortisol contributes to various metabolic processes, including the promotion of gluconeogenesis (the formation of glucose from non-carbohydrate sources), which further supports energy levels during stress.

In this context, cortisol primarily helps manage stress by preparing the body to react effectively, making option B the most accurate representation of its role.