Which of the following is a symptom of syphilis found on the genitalia?

The symptom associated with syphilis that is found on the genitalia is a chancre. A chancre is a firm, painless sore that typically appears at the site of infection during the primary stage of syphilis, usually on the genitalia, anus, or mouth. This lesion is one of the hallmark signs of syphilis infection and is crucial for diagnosis.

In contrast, herpes presents with blisters and sores that can be painful and may appear in clusters in the genital area, but it is caused by a different virus, namely the herpes simplex virus. Warts, primarily associated with human papillomavirus (HPV), manifest as growths on the genital area and are unrelated to syphilis. Eruptions can refer to a variety of skin conditions and are not specific to syphilis or its symptoms. Thus, identifying a chancre as the correct response highlights a key characteristic of syphilis deeply rooted in its pathophysiology.