Final answer:
Individual collecting tubules connect each nephron to the minor calyx, which are structures that collect urine from the collecting ducts.
Step-by-step explanation:
Individual collecting tubules connect each nephron to a minor calyx. These minor calyces are cup-like structures that receive urine from the collecting ducts before it passes on to the renal pelvis and subsequently to the ureter. The renal pelvis is the region in the kidney where the calyces join together before connecting with the ureter.
The renal pyramids, which are conical structures in the renal medulla, contain the collecting ducts and the loops of Henle from juxtamedullary nephrons and are where the renal papillae are located. Here, the collecting ducts empty urine into the minor calyces. Therefore, the correct answer to the student's question is a) Minor calyx.