Final answer:
Michelle's physician orders both a Pap smear and an HPV test to assess her risk of cervical cancer and HPV infection more comprehensively.
Step-by-step explanation:
Michelle's physician orders both a Pap smear and an HPV test because each test serves a different purpose in screening for cervical cancer and HPV infection. A Pap smear examines cells collected from the cervix to check for abnormal changes that may indicate the presence of cervical cancer. On the other hand, an HPV test detects the presence of the human papillomavirus, which is the primary cause of cervical cancer. By performing both tests, Michelle's physician can get a more complete picture of her cervical health and make informed recommendations about her future screenings and potential vaccination against HPV.