Which segment of the nephron is primarily responsible for the bulk reabsorption of approximately 60-70% of filtered sodium, water, and solutes, regardless of the body's hydration status?

✓ Correct Answer: Option D

The proximal convoluted tubule is the primary site for bulk reabsorption, reclaiming most filtered sodium, water, glucose, amino acids, and other solutes, essential for maintaining overall body fluid and solute balance.