The question is testing the understanding of terms related to levels of skill and achievement. The correct answer, C, refers to 'elite performers,' which is synonymous with individuals who have high levels of skill and achievement. Option A, 'amateurs,' refers to individuals who are not professional and do not have high levels of skill. Option B, 'superstars,' is a term more commonly used in the context of entertainment or sports and does not necessarily imply high levels of skill across all fields. Option D, 'novices,' refers to beginners who are new to a field and therefore do not have high levels of skill or achievement. The correct answer is C.