Which of the following terms describes someone who has the necessary ability or knowledge to succeed?

The term that describes someone who has the necessary ability or knowledge to succeed is "competent." Competence refers to a person's capability to perform a task effectively and efficiently, demonstrating a level of skill and understanding that is required to meet the demands of a specific role or situation. In various fields, being competent implies that an individual possesses both the theoretical knowledge and practical skills essential for successful performance.

In contrast, an amateur typically refers to someone who engages in a particular activity in a non-professional or inexperienced capacity, which does not necessarily indicate they have the requisite skills or knowledge for success in a professional context. Inexperienced describes someone who lacks experience, which directly contradicts the idea of having the necessary qualifications. Lastly, flawed denotes the presence of imperfections or weaknesses, suggesting an inadequacy rather than competence. Each of these terms highlights a distinction from the concept of being competent, which is characterized by proficiency and preparedness for success.