Step 1:
Sports injuries can occur due to various factors. Step 2: Analyze the options.
(A) Without proper warming up: Warming up is essential to prepare the muscles and joints for physical activity. Lack of warming up increases the risk of injury.
(B) Fatigue: Fatigue reduces the body's ability to react quickly and accurately, leading to injuries.
(C) Uneven ground: Uneven or slippery ground can cause falls and injuries to the body.
(D) All of these: Correct. All these factors contribute to sports injuries.
Step 3: Conclusion.
Thus, all the mentioned factors can lead to injuries in sports. Final Answer: All of these.