The correct answer is A) Determine that all induction motor driven pumps, fans, compressors, etc. are operating at their design capacity and design electrical load. The design power factor of an electrical system is typically between 0.8 and 0.9, and it tends to decrease over time due to factors such as motor aging and load changes. To maintain the normal, design power factor and keep the electrical system efficient, the key is to ensure that the major inductive load consumers, such as induction motor-driven equipment, are operating at their design capacity and electrical load. The other options are incorrect because adding capacitive or resistive loads (B and C) may help improve the power factor, but it does not address the root cause of the gradual decrease. Increasing the system frequency (D) would not directly address the power factor issue.