Final answer:
The type of cells that shouldn't ever be seen on cystocentesis is squamous epithelial cells, which indicate contamination from the external genitalia or urethra.
Step-by-step explanation:
The type of cells that shouldn't ever be seen on cystocentesis is c) Squamous epithelial cells. Cystocentesis is a medical procedure that involves inserting a needle into the urinary bladder to collect a sample of urine for testing. Squamous epithelial cells are normally found on the surface of the skin or mucous membranes, and their presence in a urine sample indicates contamination from the external genitalia or urethra. The presence of other cells like neutrophils, eosinophils, or lymphocytes may be normal or indicate an underlying medical condition.