What is the primary function of growth hormone?

The primary function of growth hormone, which is indeed reflected in the correct answer, relates to its significant role in stimulating growth and regulating metabolism. Growth hormone, produced by the pituitary gland, plays a critical role in promoting growth in children and adolescents by stimulating the growth of bones and tissues.

Additionally, growth hormone has metabolic effects that increase glucose levels in the blood. It encourages the liver to produce glucose, thereby raising blood sugar levels, which can be particularly important during fasting or intense physical activity. This increase in glucose provides the necessary energy for various biological processes, which is essential for maintaining energy balance and supporting physical performance.

The other options do not encompass the primary role of growth hormone. For example, while glucose regulation is involved in the hormone’s action, the main aspect of growth hormone is to promote growth and development rather than simply lowering blood sugar levels or facilitating digestion. Its effects on fat metabolism exist but are secondary to its growth-promoting functions.