Each minor calyx is a cup-shaped structure that receives urine from a single renal papilla, which is a small, nipple-like structure in the renal pyramid. The renal papilla is surrounded by the minor calyx, and several minor calyces merge to form major calyces, which then merge to form the renal pelvis. The renal pelvis, in turn, narrows into the ureter, which carries urine to the bladder for storage and eventual elimination. Therefore, option A) Renal papillae is the correct option.