Final answer:
To correct a wandering baseline in an ECG, the medical assistant should check and replace any loose electrodes or broken cables. Hence, option C and D are correct.
Step-by-step explanation:
To correct a wandering baseline in an electrocardiogram (ECG), the medical assistant should check and replace any loose electrodes or broken cables. A wandering baseline is often caused by poor electrode placement or faulty equipment connections. By ensuring that the electrodes are properly secured and the cables are in good condition, the baseline can be stabilized, resulting in a more accurate ECG reading.