Final answer:
Elevated C-reactive protein is the correct lab value associated with Ulcerative Colitis, indicating inflammation. A low erythrocyte sedimentation rate and normal fecal occult blood are not typical findings in active disease, and a decreased white blood cell count is also not characteristic.
Step-by-step explanation:
The question relates to laboratory values associated with Ulcerative Colitis, an inflammatory bowel disease. Out of the options provided, Option 2: Elevated C-reactive protein is indicative of inflammation which can occur in ulcerative colitis. C-reactive protein (CRP) is a substance produced by the liver in response to inflammation, and an elevated level of CRP in the blood is a marker of inflammation anywhere in the body, including the intestines. Option 3: Low erythrocyte sedimentation rate (ESR) is not typical in active ulcerative colitis, as ESR usually rises with inflammation. Additionally, Option 4: Normal fecal occult blood is less likely in ulcerative colitis as this condition often causes bloody diarrhea. Conversely, Option 1: Decreased white blood cell count is not typical in ulcerative colitis; rather, you might see an increased count during active inflammation or infection.