Final answer:
Aldosterone is the only steroid hormone in the list provided, which includes a variety of peptide and protein hormones involved in body regulation and function.
Step-by-step explanation:
The only steroid hormone in the list provided is aldosterone. Aldosterone is an adrenal cortex hormone involved in the regulation of salt and water balance by increasing the reabsorption of sodium by the kidneys. It belongs to a class of hormones called mineralocorticoids, which are a subset of steroids.
Other items in the list, such as antidiuretic hormone (ADH), growth hormone (GH), luteinizing hormone (LH), oxytocin, prolactin, thyroid hormones (T3 and T4), and thyroid-stimulating hormone (TSH), are not steroid hormones, but are peptides or proteins.
Steroid hormones are derived from cholesterol and can easily cross cell membranes due to their lipophilic nature, which distinguishes them from peptide hormones that require receptors on the target cell surface.