प्रस्तुत उताऱ्यासाठी अधिक योग्य शीर्षक कोणते ?

The correct answer is Option D (युवासागर).

Key Points:
• The passage opens with the concept of 'युवासागर' and elaborates throughout on the vast, untapped potential of youth, comparing their collective energy to an ocean ('युवासागराला आपल्या भव्य शक्तीचे भान अद्याप झालेले नाही').
• The entire narrative pivots around waking up this ocean of youth energy to constructive commitment.
• Hence, the most comprehensive and apt title for the passage is 'युवासागर'.
• Key Takeaway: The central metaphor representing the vast, latent energy of youth throughout the passage is 'युवासागर'.