Step 1: Understanding the statements.
Option (A) highlights a positive, energetic mental attitude, irrespective of age.
Option (B) emphasises loss of innocence with experience.
Step 2: Interpretation.
A youthful mindset encourages creativity, enthusiasm, and optimism beyond biological age.
Step 3: Conclusion.
Since mental freshness defines how a person lives life, (A) is the healthier and more positive belief.