Final answer:
Syphilis is the condition that manifests itself in three stages: primary, secondary, and tertiary. It's a sexually transmitted infection caused by the bacterium Treponema pallidum, with symptoms ranging from painless sores to severe organ damage.
Step-by-step explanation:
The condition that manifests itself in three stages is Syphilis. Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. The disease progresses through three distinct stages: primary, secondary, and tertiary. During the primary stage, the most noticeable symptom is a painless sore or ulcer at the infection site, known as a chancre. The secondary stage can develop once the chancre has begun to heal, presenting a widespread rash, which often starts on the palms of the hands or the soles of the feet, as well as other symptoms like fever and lymph node swelling. If left untreated, the infection can progress to the tertiary stage years later, leading to severe medical problems including damage to the brain, nerves, eyes, heart, blood vessels, liver, bones, and joints.
Options B) Trachoma, C) Gonorrhea, and D) AIDS are distinct conditions. While AIDS, caused by the HIV virus, also has multiple stages of progression, it does not typically follow the three-stage pattern observed in syphilis.