Answer:
A. having the desire to be challenged
Step-by-step explanation:
Choosing a career to make more money will be wrong as the interest to do the job will decrease over a period of time and there will be stress to fulfill the job responsibilities. Similarly choosing a career based on popular idea and not making sure whether you are real fit for the job will ultimately ruin the career. Also being afraid to take risks or move away from comfort zone will reduce the chances for career growth.
Hence having the desire to be challenged in your career is the sure step to a successful career.