[Solved] Which one of the following terms is defined as debt issued without specific collateral pledged as security? A)unsecured debt B)indenture C)vanilla bond D)naked bond E)risk-free bond Progesterone: A steroid hormone released by the ovaries that prepares the uterus for pregnancy and the mammary glands for lactation. Testis: One of two male reproductive glands located in the scrotum; produces spermatozoa, testosterone, and inhibin. LH: LH stands for Luteinizing Hormone, a hormone produced by the anterior pituitary gland that plays a key role in regulating the reproductive system, including ovulation in females and testosterone production in males. Thyroglobulin: A protein produced by the thyroid gland, serving as a precursor to thyroid hormones, which regulate metabolism.