If the adrenal gland cannot meet progesterone demands, what symptoms might develop?

The correct choice is based on the concept of hormonal balance in the body. When the adrenal glands are unable to produce sufficient progesterone, it can lead to a relative excess of estrogen in relation to progesterone, a condition commonly referred to as estrogen dominance. This imbalance can result in a variety of symptoms related to estrogen dominance, including mood swings, bloating, weight gain, and irregular menstrual cycles, among others.

Understanding this means recognizing the crucial role progesterone plays in balancing the effects of estrogen. Without adequate progesterone levels, the body's hormonal environment shifts towards being more estrogenic, which is characterized by the aforementioned symptoms. This linkage between progesterone deficiency and estrogen dominance helps explain why the symptoms of estrogen dominance arise when progesterone demands are not met by the adrenal glands.

Other options such as sleep apnea, increased libido, or muscle gain do not correlate directly with adrenal insufficiency regarding progesterone production or indicate a clear hormonal imbalance in the context described.