Final answer:
In terms of meritocracy, all medical careers including physician's assistant would provide opportunities for advancement and recognition based on performance and achievements.
Step-by-step explanation:
The question does not provide enough context to accurately determine which medical career ranks highest in a specific context such as salary, job demand, or prestige. However, if we refer to the concept of meritocracy mentioned in the provided information, we can infer that a medical career even at the level of a physician's assistant would reward individuals based on ability and achievement.
For example, under a system of meritocracy, a physician's assistant would earn a pay raise for doing excellent work rather than receiving equal pay regardless of performance or being considered a member of a certain social class solely based on their job title.
In the context of various medical careers, including medical technician, medical examiner, and neurophysiologist, students can expect that educational requirements and day-to-day responsibilities would differ significantly among these roles, as would the paths for advancement and recognition based on performance.