A 25-year-old woman has recently moved to a new city. She comes today for her first routine visit and annual physical assessment. She feels well, reports no new symptoms, and her past medical history is negative. Her only medication is the oral contraceptive pill; she is currently in university and drinks on a social basis. She reports smoking in her teens but quit 7 years ago. The physical examination is completely normal. She asks you about screening tests for cancer at her age. Which of the following cancer screening tests are recommended for her age group?