Rheumatoid arthritis is characterized by which of the following?

Rheumatoid arthritis is primarily known for causing inflammation, stiffness, and joint pain, which are hallmark symptoms of the condition. It is an autoimmune disease where the body's immune system mistakenly attacks the synovium, the lining of the membranes that surround the joints. This leads to a characteristic swelling and tenderness in the affected joints, resulting in a painful condition that can affect everyday activities and overall quality of life.

The presence of inflammation in rheumatoid arthritis is significant, as it not only contributes to the pain and discomfort but can also lead to joint damage over time if left untreated. Stiffness, especially in the morning or after periods of inactivity, is also a common symptom experienced by individuals with this condition.

While other options may represent symptoms or conditions associated with different types of arthritis or other diseases, they do not accurately capture the defining features of rheumatoid arthritis, which center around joint inflammation, stiffness, and pain.