Final answer:
Magnesium is reabsorbed and chloride is reabsorbed in the renal tubule epithelial cell. Hence the correct answer is option 1
Step-by-step explanation:
The correct answer is option 1) reabsorbed, reabsorbed. According to the information provided, most nutrients are reabsorbed in the proximal convoluted tubule (PCT) of the renal tubule, including magnesium. Additionally, chloride is also reabsorbed in the PCT. Reabsorption occurs either by passive or active transport, and the process is regulated by hormones.
Hence the correct answer is option 1