Final answer:
Not valuing the opinions of others is NOT a demonstration of professionalism in a career. Professionalism includes respect, organization, and continuous learning.
Step-by-step explanation:
A demonstration of professionalism in a career includes showing respect for others, staying organized, and pursuing needed education and training for a career. Therefore, the correct answer to the question is c) Not value the opinions of others. This option clearly goes against the concept of professionalism, which emphasizes respect and consideration for the perspectives and ideas of others. Occupational prestige suggests that jobs are not equally valued, and behaving professionally supports this notion by reinforcing the importance of treating every role with dignity and respect. Additionally, adhering to professional standards includes returning promptly from breaks, maintaining a professional appearance, and respecting the authority of managers.