Final answer:
Nurses must be certified after completing their education to practice professionally, which involves passing an exam administered by professional nursing organizations.
Step-by-step explanation:
The question pertains to the professional requirements for nurses after completing their education. The correct answer is that in addition to attaining the required education, nurses must be certified. Certification is an essential step in the nursing profession as it demonstrates that the nurse has met specific standards of proficiency and knowledge in their field. Nursing certifications are typically administered by professional organizations and require passing an exam. These certifications confirm a nurse's qualification to provide high-quality care to patients. While being multilingual or trained in other disciplines can be beneficial, they are not mandatory for nursing.