A. External rewards guarantee personality growth
B. A naturally confident person succeeds without effort
C. Personality remains unchanged regardless of training
D. A disciplined person thrives in both supportive and challenging environments

Solution

D. A disciplined person thrives in both supportive and challenging environments

Explanation

The option combines an internal characteristic—discipline—with the influence of different environments.

इसमें discipline जैसे internal trait और supportive/challenging environment दोनों की भूमिका दिखाई गई है।