Final answer:
The cell type indicative of cystitis or pyelonephritis and that changes shape depending on bladder fullness is the Transitional epithelial cell.
Step-by-step explanation:
The type of cell that is usually round, granular with a small nucleus, larger than white blood cells, and when found in large numbers is indicative of cystitis or pyelonephritis is the d. Transitional epithelial cell. Transitional epithelia are found only in the urinary system, including the ureters and the urinary bladder.
Granulocytes, which include neutrophils, eosinophils, and basophils, are a different type of cell. They are types of white blood cells and are involved in the body's immune response, but they do not change shape based on bladder fullness and are easily distinguishable from transitional epithelial cells by their distinctive granules and lobed nuclei.