End product of progesterone metabolism found in urine: (A) Pregnenolone, (B) 17-OH Pregnenolone, (C) Pregnanetriol, (D) Pregnanediol
Answer is D. Fate of progesterone

Within a few minutes after secretion, almost all the progesterone is degraded to other steroids that have no progesterone effect
The major end product of progesterone degradation is pregnanediol. Approximately 10%  is excreted in urine in this form