Final answer:
Human papillomaviruses (HPV) cause genital warts, which are growths on the genitalia or anus, and can also lead to cervical cancer. The correct answer to the question is 'a. genital warts'. Vaccination with GARDASIL is recommended for prevention.
Step-by-step explanation:
Human papillomaviruses (HPV) are a common sexually transmitted virus. One of the ailments that HPV can cause is genital warts, which are soft, pink, irregular growths that develop on the external genitalia or anus. The question is asking which condition is caused by human papillomaviruses. In this case, the correct answer to the question is a. genital warts.
In addition to genital warts, certain strains of HPV can also lead to cervical cancer in females. It's important to note that while HPV is often associated with genital warts, it is not always detectable by the presence of warts as some strains do not cause warts and may remain asymptomatic for a long time. Regarding preventive measures, there is a vaccine called GARDASIL recommended for females aged 11 to 26 years to prevent infection with HPV.