Question

in exfoliative cytology, the cells for examination are obtained by: a incision. b syringe. c needle. d scraping.

Explanation:

Exfoliative cytology involves obtaining cells that have shed or can be easily removed from a surface. Scraping is a common method to collect such cells for examination. Incision is a surgical - cut method, a syringe and needle are mainly used for aspiration or injection in other sampling contexts, not typical for exfoliative cytology.

Answer:

D. scraping