Correct Answer - Option 3 : Warmheartedness
The correct answer is Warmheartedness.
The passage talks about the life of Dr. Radhakrishnan.
- In the second line of the second paragraph, it is stated that:
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"But what made him even more popular was his warmheartedness and his ability to draw out people"
- From this line, it is clear that the quality that made him more popular was his warmheartedness.
Thus the correct answer is Warmheartedness.