Glucocorticoids contribute to which of the following functions in the body?

Glucocorticoids play a crucial role in various metabolic processes in the body, and their contribution to energy preservation is significant. These hormones, released by the adrenal cortex, help increase glucose levels through gluconeogenesis, which is the process of converting non-carbohydrate substrates into glucose. This increase in glucose availability is vital during stress, as it provides the necessary energy for various bodily functions.

Additionally, glucocorticoids promote the breakdown of proteins, a process known as protein catabolism. This release of amino acids into the bloodstream can also be used for gluconeogenesis, further enhancing the body's energy supply. Moreover, glucocorticoids influence lipid metabolism by promoting fat formation or lipogenesis. This response helps the body store energy efficiently, ensuring a reserve during times of increased demand.

Given these processes, glucocorticoids fundamentally assist in energy preservation and supply through mechanisms that increase glucose levels and mobilize energy substrates, which is why this choice accurately reflects their physiological role.