A 55-year-old female patient with rheumatoid arthritis reports increasing fatigue and difficulty performing daily activities. Which nursing intervention should be prioritized to effectively address her fatigue and enhance her quality of life?

Advise the patient to avoid all physical activities to prevent joint discomfort.

Encourage the patient to rest for long periods without activity.

Recommend engaging in regular, moderate exercise to improve joint function and reduce fatigue.

Suggest the patient increase her caloric intake significantly to combat fatigue.