Final answer:
The basic major warning signal for arthritis is none of the above. Arthritis involves inflammation of the joint, causing pain, swelling, stiffness, and reduced mobility.
Step-by-step explanation:
The basic major warning signal for arthritis is none of the above. Arthritis is a common disorder that involves inflammation of the joint, resulting in joint pain, swelling, stiffness, and reduced mobility. While redness in the eyes, dry mouth, pus, and lock jaw are not specific warning signals for arthritis, they may be associated with other health conditions. It's important to consult a healthcare professional for a proper diagnosis and treatment.