Concept:All sentences except one revolve around the theme of good health and fitness.
Explanation:Statements B and C discuss what good health truly means.
Statement A explains that a healthy life requires both physical and mental fitness.
Statement D gives an example that absence of disease alone does not mean a person is healthy.
Thus, A, B, C, and D form a connected context about good health.
Statement E talks about dealing with a problem early, which is unrelated to the health context.
Therefore, E is the odd one out.
Answer:E
Correct option: D