Final answer:
Erythema migrans, commonly associated with Lyme disease, is caused by the bacterium Borrelia burgdorferi and is transmitted by infected ticks.
Step-by-step explanation:
The condition caused by the bacterium Borrelia burgdorferi is (g) erythema (chronica) migrans, which is often associated with Lyme disease. Lyme disease is transmitted through the bite of infected black-legged ticks. It often presents with a characteristic bullseye rash at the site of the tick bite. Without prompt and proper treatment, Lyme disease can lead to more severe symptoms affecting the nervous system, eyes, joints, and heart.