The correct answer is 4. 1 & 2 both. Urine refers to the waste fluid produced by the kidneys, which is then excreted through the urinary tract. The urinary tract consists of the organs involved in the production, storage, and elimination of urine, including the kidneys, ureters, bladder, and urethra. Therefore, both urine and the urinary tract are related to each other in terms of the excretion process.